In harsh northern climes, mountain cherry trees develop a tough, fibrous bark that can be easily peeled horizontally, but is extremely strong vertically.

在气候恶劣的北部地区，山上的樱桃树长出坚韧的、含纤维的树皮，沿着水平方向可以很容易去皮，但垂直方向极端坚固。

youdao

Due to a lack of permanent freshwater on most of the islands, it is likely the Ngaro lived in mainland Australia, venturing across the sea on canoes made from three diamond-shaped pieces of bark bound together with fibrous roots.

BBC: Kayaking Australia��s Whitsunday Islands