ManMade readers and filmaker Josh Brine created this cool video featuring Jacob and Luke Cowdin, two brothers who turned a tree that fell in their backyard into something they could skate.
The wood appears to be a a trunk of spalted birch, which gives the wood those amazing black lines. Spalting is caused by fungus, which gives the wood awesome color and a killer figure, though you should be sure not to use it on any projects that might come in contact with food, and you gotta wear a respirator so you don't breathe in the spores. (Ahem...)
The video is definitely worth a watch:
Great work, Josh.