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发表于 2011-4-25 18:04:21
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野隐
APRIL 24
绝对的让人自虐的想活着出去。。。谁的忽悠？
END~~~
揭发一下，这个是小马哥的忽悠:wink: 虽然带着大家探洞，但小马哥还是经验丰富很仔细严谨的----事先在洞口留意到另一出口的距离是half mile，但他带着大家在地洞里穿梭了四十分锺后还没有快出洞的感觉，虽然再坚持十五分钟左右就有出洞的可能? 小马哥还是毅然决定带大家回返 :lol:
我原打算就在洞边洞里略转一下，所以一点功课未做。让同室的队友带头灯，我自己却没有带，两眼一抹黑，一路上多亏Sook关照，她或走一段就回头给我照明，或干脆挽着我的手膀带着我. Thanks Sook!
http://www.fs.fed.us/gpnf/recreation/ape-cave/index.shtml
.....During this eruptive period, hot fluid lava pulsed through the tube for months, possibly up to a year, until the eruption subsided. As a result of this rare eruption, a spectacular 13,042 foot (3976m) long lava tube, the third longest in North America, was created. ....
Lower Cave - Easier Route
The main entrance divides the cave into two sections, the upper cave and lower cave. The three-quarter-mile (1200m) lower portion takes about one hour round-trip to complete. Interesting geological features include the meatball and the railroad tracks.
The meatball is a block of cooled lava which fell from the lava tube ceiling while lava was still flowing through the cave. It floated on the surface of the lava flow and was ferried downstream until it became wedged in a narrow spot 12 feet (4m) above the present cave floor.
The railroad tracks are levees that formed along the side of a tongue of flowing lava. As the fluid lava drained out of the tube, the levees remained intact.
The sandy floor found in the lower section of the cave formed when volcanic ash, pumice and other debris washed into the cave following eruptive episodes as recent as 450 years ago. Debris from these events filled the cave’s lower section, ultimately plugging its lower end. As a result, visitors must return to the main entrance in order to exit the cave.
Upper Cave - More Difficult Route
The 1½-mile (2100m), upper portion of the cave takes about 2½ hours to complete, returning on a surface trail. Cavers must climb over approximately 27 boulder piles and scale an 8-foot (2.5m) high lava fall.
The boulder piles, called breakdown, formed after the eruption subsided and the fluid lava drained from the tube. As the lava tube cooled, it began to shrink and crack. These cracks weakened the ceiling and walls causing parts of them to collapse. The entrances to Ape Cave formed in this way.
There is a skylight in the tube near the upper exit. However, to finish the upper cave, continue on through the tube to a permanently attached metal ladder. Serious injuries have occurred when individuals have attempted to exit the cave through this skylight. |
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发表于 2011-4-25 09:59:49
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发表于 2011-4-25 10:52:09
