fascinating

Interesting (although not always desirable) when it happens naturally but can become a quite dramatic, sculptural effect when done intentionally.

A few years ago, while camping at Glendalough state part one summer, there was a white oak of some sort. It had two trunks from the ground to about 4 ft' up, at that point they melded into one trunk with a single crown. A little like bens tree but no other connections. Looked like it was standing on two legs. ;-)