bleached wood Bull Island dead tree driftwood tree tree trunk autumn branch branches nature season sky sunset trunk vegetation background bark detail palm palm trees rough shapes cut gap gaps pile trees wood x forest lake loch needles pine abstract appearance bumps close-up colors colours cut-branches dry edge edges gray grey grooves layers lines patterned patterns perspectives ridges shape shaped strange surface surfaced surfaces texture textured textures timber tree-trunk twisted uneven unusual variations varieties Africa animal bath bush cow elephant Mud tusk water