The Viking Cave is a large cave that was a refuge for ancient vikings waiting out storms. At least that’s what is commonly thought since there are old drawings on the cave walls that appear to be ancient viking ships.
The cave was closed to tourists on this visit, but I entered on a previous visit in 2001. Inside the cave is an enormous main cavern with a tall ceiling like a cathedral, and the locals had built a shoddy tower of bamboo, loosely strapped together with old shaggy ropes, all the way to the ceiling of the cave. If I recall correctly, they used this sketchy bamboo “ladder” to collect birds eggs which were then sold as a delicacy in some areas.
Location: Koh Phi Phi Ley, Thailand