This is part of a recreation of a village at Kualoa Ranch in Kaneohe, HI. I remember the tour guide saying the shaman of the village would sleep up there to receive messages from the gods in his dreams, but it has bothered me ever since that I cannot remember the name. I have searched all kinds of history sites, but to no avail.
sketchingwords.com 
fascinating – not sure I could sleep up there let alone dream. Hopefully someone else will know the name for you
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