Fun fact: Mythbusters actually tested the logs, though their rig had shorter logs and not as much swing. Still pulped an armoured truck.
No joke. Redwoods are majestic and dense. There's a reason people built houses out of them.
~27lbs/cu.ft for redwood vs ~49-66 for different types of eucalyptus, which is what they tested with, but considering the shorter swing and logs I think the only question is how the hell the Ewoks got the logs up there in the first place.
They commune with the trees and earn their favor
I'm guessing through offerings of burnt flesh and ritual cannibalism, which seems to be the norm for when they encounter anything they deem godlike
Edited by ficklegreendice