I don't know either but I think that is what the potential super volcano at Yellowstone is, a thin area.
update
When my daughter did her jungle trek to the other side of the island, she wrongly assumed it would be a relatively flat hike. Turns out there were small cliffs and one she had to rappel by ropes along the trail. She broke both her sandals and at the bottom she discovered a sandal graveyard. She had to go the rest of the way and return barefooted.
She's back on the mainland to get a visa for travel to Vietnam. She said it would have been $150 and taken 2 weeks to do it here. In Cambodia, it was $60 and took 5 hours.
So she'll soon be heading there for 3 weeks.
update
When my daughter did her jungle trek to the other side of the island, she wrongly assumed it would be a relatively flat hike. Turns out there were small cliffs and one she had to rappel by ropes along the trail. She broke both her sandals and at the bottom she discovered a sandal graveyard. She had to go the rest of the way and return barefooted.
She's back on the mainland to get a visa for travel to Vietnam. She said it would have been $150 and taken 2 weeks to do it here. In Cambodia, it was $60 and took 5 hours.
So she'll soon be heading there for 3 weeks.
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