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Tag Archives: a’a

by Donald B. MacGowan

New at iTunes: Hawaii Dream Vacation iPhone/iPod Touch App Puts the Magic of Hawaii in the Palm of Your Hand. Interactive maps, GPS and WiFi enabled, dozens of videos…available at iTunes or www.tourguidehawaii.com.

Sunset lights-up Mauna Ulu, Hawaii Volcanoes National Park: Graphic from Photo by Donald B MacGowan

There are many wondrous, enigmatic and fascinating attractions on the Big Island of Hawaii, some better known than others, many out of the way and generally off the beaten track. Tour Guide Hawaii has produced an encyclopedic collection of the most up-to-date information, presented as short GPS-cued videos, in an app downloadable to iPhone and iPod Touch that covers the entire Big Island, highlighting the popular and the uncrowded, the famous and the secluded, the adventurous and the relaxing.

Mauna Ulu

New at iTunes: Hawaii Dream Vacation iPhone/iPod Touch App Puts the Magic of Hawaii in the Palm of Your Hand. Interactive maps, GPS and WiFi enabled, dozens of videos…available at iTunes or www.tourguidehawaii.com.

Sunset and alpenglow at Mauna Ulu, Hawaii Volcanoes National Park: Photo by Donald B MacGowan

Mauna Ulu, or “growing mountain” is a still steaming, tall, shield-shaped hill formed by numerous eruptions along the rift between 1969 and 1974. Mauna Ulu is best seen by walking beyond the parking lot to where the end of road is covered in fresh lava flows. At Mauna Ulu, visitors can get an intimate look at both pahoehoe and a’a lava flow types.

New at iTunes: Hawaii Dream Vacation iPhone/iPod Touch App Puts the Magic of Hawaii in the Palm of Your Hand. Interactive maps, GPS and WiFi enabled, dozens of videos…available at iTunes or www.tourguidehawaii.com.

Mauna Ulu Crater from the air, Hawaii Volcanoes National Park: Photo by Donald B MacGowan

Pahoehoe, the less viscous and generally hotter liquid flow, moves fluidly like a river or glacier, the surface folding and molding, like poured taffy, into a ropey structure. Pahoehoe forms generally flat, fairly smooth, hard surfaces. A’a, on the other hand, is much cooler and has exolved much of its dissolved gas, so it is much more viscous, causing the upper surface to fracture into clinker-like boulders and fragments. Flowing a’a sounds and looks like a moving pile of hot glass shards; when it cools, it leaves behind rubbly piles of sharp fragments. Fields of pahoehoe and a’a make a landscape that look as if Madame Pele has bulldozed her land to flat surfaces, but left these acres of boulder piles here and there.

New at iTunes: Hawaii Dream Vacation iPhone/iPod Touch App Puts the Magic of Hawaii in the Palm of Your Hand. Interactive maps, GPS and WiFi enabled, dozens of videos…available at iTunes or www.tourguidehawaii.com.

Barren slopes of Mauna Ulu, Hawaii Volcanoes National Park: Photo by Donald B MacGowan

The hike to the summit of Mauna Ulu is fabulous and rewarding. However, it is a long, dry, serious hike with some dangers (rock fall, crater collapse, scalding steam and others) and should only be undertaken by those in good physical condition and experienced at hiking cross-country across broken and hazardous ground.

New at iTunes: Hawaii Dream Vacation iPhone/iPod Touch App Puts the Magic of Hawaii in the Palm of Your Hand. Interactive maps, GPS and WiFi enabled, dozens of videos…available at iTunes or www.tourguidehawaii.com.

Aerial view of Pu'u Huluhulu, Hawaii Volcanoes National Park: Photo by Donald B MacGowan

Pu’u Huluhulu (“shaggy hill”) is a 150 foot tall cinder cone formed in pre-contact times between Mauna Ulu and Pauahi Crater. There is a fascinating 3 mile round trip hike from the Mauna Ulu parking lot to the top of Pu’u Huluhulu that is marked by cairns (or “ahu”). The round trip hike from Mauna Ulu Parking lot to Pu’u Huluhulu and return takes about an hour and a half to two hours. From the vantage point of Pu’u Huluhulu’s summit are fine views of Mauna Loa, Kilauea, Mauna Kea, the coastline and the very interesting, active cinder cone, Pu’u O’o (hill of the bird”), about 5 miles away.

New at iTunes: Hawaii Dream Vacation iPhone/iPod Touch App Puts the Magic of Hawaii in the Palm of Your Hand. Interactive maps, GPS and WiFi enabled, dozens of videos…available at iTunes or www.tourguidehawaii.com.

Aerial View of Pu'u O'o Vent, Hawaii Volcanoes National Park: Photo by Donald B MacGowan

Pu’u O’o was built by the fire-fountains erupting along Kilauea’s rift zone between 1983 and 1986. Since 1986, the center of eruption has moved about 2 miles further down the rift to a vent called “Kupaianaha”, or ”mysterious” in Hawai’ian. However, within the maw of Pu’u O’o is an active lava lake, which serves as a window into the plumbing of the eruptive rift system.

New at iTunes: Hawaii Dream Vacation iPhone/iPod Touch App Puts the Magic of Hawaii in the Palm of Your Hand. Interactive maps, GPS and WiFi enabled, dozens of videos…available at iTunes or www.tourguidehawaii.com.

An a'a lava flow piled up on a pahoehoe flow in front of Pu'u Huluhulu, Hawaii Volcanoes National Park: Photo by Donald B MacGowan

To see the new iPhone/iPod Touch App, please visit http://www.tourguidehawaii.com/iphone.html. The best of Tour Guide Hawaii’s free content about traveling to, and exploring, the Big island, can be found here.

New at iTunes: Hawaii Dream Vacation iPhone/iPod Touch App Puts the Magic of Hawaii in the Palm of Your Hand. Interactive maps, GPS and WiFi enabled, dozens of videos…available at iTunes or www.tourguidehawaii.com.

The rubble slopes of Mauna Ulu, Hawaii Volcanoes National Park: Photo by Donald B MacGowan

For more information on traveling to Hawaii in general and on touring the Big Island in particular, please also visit www.tourguidehawaii.com and www.tourguidehawaii.blogspot.com.

New at iTunes: Hawaii Dream Vacation iPhone/iPod Touch App Puts the Magic of Hawaii in the Palm of Your Hand. Interactive maps, GPS and WiFi enabled, dozens of videos…available at iTunes or www.tourguidehawaii.com.

Ohi'a blossom and Mauna Ulu, Hawaii Volcanoes National Park: Photo by Donald B MacGowan

All media copyright 2010 by Donald B. MacGowan. All rights reserved.
New at iTunes: Hawaii Dream Vacation iPhone/iPod Touch App Puts the Magic of Hawaii in the Palm of Your Hand. Interactive maps, GPS and WiFi enabled, dozens of videos…available at iTunes or www.tourguidehawaii.com.

Sunset and alpenglow at Mauna Ulu, Hawaii Volcanoes National Park: Graphic from Photo by Donald B MacGowan

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by Donald B. MacGowan

New at iTunes: Hawaii Dream Vacation iPhone/iPod Touch App Puts the Magic of Hawaii in the Palm of Your Hand. Interactive maps, GPS and WiFi enabled, dozens of videos…available at iTunes or www.tourguidehawaii.com.

A'a and pahoehoe lava flows on the Holei Pali at Hawaii Volcanoes National Park: Graphic from Photo by Donald B MacGowan

There are many wondrous, enigmatic and fascinating attractions on the Big Island of Hawaii, some better known than others, many out of the way and generally off the beaten track. Tour Guide Hawaii has produced an encyclopedic collection of the most up-to-date information, presented as short GPS-cued videos, in an app downloadable to iPhone and iPod Touch that covers the entire Big Island, highlighting the popular and the uncrowded, the famous and the secluded, the adventurous and the relaxing.

Holei Pali

New at iTunes: Hawaii Dream Vacation iPhone/iPod Touch App Puts the Magic of Hawaii in the Palm of Your Hand. Interactive maps, GPS and WiFi enabled, dozens of videos…available at iTunes or www.tourguidehawaii.com.

Holei Pali and the remnant of the Naulu Forest, Hawaii Volcanoes National Park: Photo by Donald B MacGowan

From the Holei Pali Turnout look back up the escarpment at the cascading braids of lava that festoon the pali face. When lava first pours over a steep cliff like this, the increase in speed of flow concomitant with increased flow turbulence, causes the lava to cool rapidly and degas. Thus, the initial flows down the pali are a’a flows. As the lava feeder tube system builds toward and over the cliff, fresher lava insulated in the tube longer, partially buries these initial a’a flows in less viscous pahoehoe. This process is seen clearly on the face of Holei Pali, where lavas that erupted from Mauna Ulu between 1969 and 1974 poured over the cliff.

New at iTunes: Hawaii Dream Vacation iPhone/iPod Touch App Puts the Magic of Hawaii in the Palm of Your Hand. Interactive maps, GPS and WiFi enabled, dozens of videos…available at iTunes or www.tourguidehawaii.com.

New life in the fresh basalt, Holei Pali at Hawaii Volcanoes National Park: Photo by Donald B MacGowan

Look at the emerald patches of forest within the intertwined flows above Alanui Kahiko. These kipukas are all that is left of the original, dense Naulu tropical forest.

New at iTunes: Hawaii Dream Vacation iPhone/iPod Touch App Puts the Magic of Hawaii in the Palm of Your Hand. Interactive maps, GPS and WiFi enabled, dozens of videos…available at iTunes or www.tourguidehawaii.com.

Holei Pali in a voggy rain, Hawaii Volcanoes National Park: Photo by Donald B MacGowan

Imagine what it must have been like to stand here and see the lava cascading over these cliffs, the fire fountains of Mauna Ulu in the background. This is exactly analogous to what is happening at the Kupaianaha Vent and the pali down at Waikupanaha, by Kalapana in Puna, today.

To see the new iPhone/iPod Touch App, please visit http://www.tourguidehawaii.com/iphone.html. The best of Tour Guide Hawaii’s free content about traveling to, and exploring, the Big island, can be found here.For more information on traveling to Hawaii in general and on touring the Big Island in particular, please also visit www.tourguidehawaii.com and www.tourguidehawaii.blogspot.com.

For independent reviews of our product, written by some of our legions of satisfied customers, please check this out.

All media copyright 2010 by Donald B. MacGowan. All rights reserved.

New at iTunes: Hawaii Dream Vacation iPhone/iPod Touch App Puts the Magic of Hawaii in the Palm of Your Hand. Interactive maps, GPS and WiFi enabled, dozens of videos…available at iTunes or www.tourguidehawaii.com.

Abandoned firehose below the Holei Pali, Hawaii Volcanoes National Park: Photo By Donald B MacGowan

by Donald B. MacGowan

New at iTunes: Hawaii Dream Vacation iPhone/iPod Touch App Puts the Magic of Hawaii in the Palm of Your Hand. Interactive maps, GPS and WiFi enabled, dozens of videos…available at iTunes or www.tourguidehawaii.com.

Looking out Holei Lava Tube, Hawaii Volcanoes National Park: Graphic from Photo by Donald B MacGowan

There are many wondrous, enigmatic and fascinating attractions on the Big Island of Hawaii, some better known than others, many out of the way and generally off the beaten track. Tour Guide Hawaii has produced an encyclopedic collection of the most up-to-date information, presented as short GPS-cued videos, in an app downloadable to iPhone and iPod Touch that covers the entire Big Island, highlighting the popular and the uncrowded, the famous and the secluded, the adventurous and the relaxing.

Holei Lava Tube

New at iTunes: Hawaii Dream Vacation iPhone/iPod Touch App Puts the Magic of Hawaii in the Palm of Your Hand. Interactive maps, GPS and WiFi enabled, dozens of videos…available at iTunes or www.tourguidehawaii.com.

Entrance to Holei Lava Tube, Hawaii Volcanoes National Park: Photo by Donald B MacGowan

Beyond the Holei Pali turn out and just past Mile Marker 15, in the southeast side of the road, a good-sized lava tube may be seen in the road cut; there is a parking turnout just past the tube entrance. With care and a bike helmet, the tube can be explored for nearly 30 meters, until breakdown pinches it out.

New at iTunes: Hawaii Dream Vacation iPhone/iPod Touch App Puts the Magic of Hawaii in the Palm of Your Hand. Interactive maps, GPS and WiFi enabled, dozens of videos…available at iTunes or www.tourguidehawaii.com.

Fern grotto in a skylight of the Holei Lava Tube, Hawaii Volcanoes National Park: Photo by Donald B MacGowan

This tube has numerous skylights, so a flashlight is not absolutely necessary, but it is recommended. The cave is short, but interesting and easily navigable. Notice that most if not all of the stalactites have been taken by tourists as souvenirs—please don’t emulate this mindless vandalism.

New at iTunes: Hawaii Dream Vacation iPhone/iPod Touch App Puts the Magic of Hawaii in the Palm of Your Hand. Interactive maps, GPS and WiFi enabled, dozens of videos…available at iTunes or www.tourguidehawaii.com.

Interior texture of Holei Lava Tube, note vandalized stalactites, Hawaii Volcanoes National Park: Photo by Donnie MacGowan

Unless recent breakdown has now blocked it, with wriggling, skinny or determined people can make it to a small portal with a view into the fern grotto under the largest skylight; this is your turn-around spot. Please do not force your way into the grotto as it will kill the plants and destroy the miniature ecosystem that has grasped a wee toehold here. Besides which, the grotto is populated by numerous wasp nests.

A walk to the top of the hill which overlies the tube entrance brings one to the skylights along the cave, and wonderful glimpses down into the fern paradise that grows within. Remember that lava tube skylights are collapse features and do not approach the edges too closely; they are unstable and unsafe. The top of the hill makes a wonderful place from which to watch the setting sun light-up the Holei Pali.

New at iTunes: Hawaii Dream Vacation iPhone/iPod Touch App Puts the Magic of Hawaii in the Palm of Your Hand. Interactive maps, GPS and WiFi enabled, dozens of videos…available at iTunes or www.tourguidehawaii.com.

Fern grotto in a large skylight, Holei Lava Tube at Hawaii Volcanoes National Park: Photo by Donald B MacGowan

To see the new iPhone/iPod Touch App, please visit http://www.tourguidehawaii.com/iphone.html. The best of Tour Guide Hawaii’s free content about traveling to, and exploring, the Big island, can be found here.For more information on traveling to Hawaii in general and on touring the Big Island in particular, please also visit www.tourguidehawaii.com and www.tourguidehawaii.blogspot.com.

For independent reviews of our product, written by some of our legions of satisfied customers, please check this out.

All media copyright 2010 by Donald B. MacGowan. All rights reserved.

New at iTunes: Hawaii Dream Vacation iPhone/iPod Touch App Puts the Magic of Hawaii in the Palm of Your Hand. Interactive maps, GPS and WiFi enabled, dozens of videos…available at iTunes or www.tourguidehawaii.com.

Sunset at Holei Lava Tube, Hawaii Volcanoes National Park: Graphic from Photo by Donald B MacGowan