bare bleak blue branch branches brown chainsaw chop clear cleared clearing devastation fell felled green grey heather log logging logs saw sky Stump tangle timber tree trees trunk background close driftwood fiber fibre filament firewood lines plank structure texture vintage wood wave wavy wavy texture wood wood lines wood structure wood texture woodgrain alternate alternating black black and white curves design fan fantail Funchal madeira pattern patterned patterns pavement piazza repeat repetition square stone town tradition traditional urban white activity acuity blind chart check eyes contact cutout Doctor etdrs eye eye test eyes glasses isolated letters measure optic see small table tablet test vision visual visual acuity Australian Banksia tree color colour curly fawn flora flower furry golden large leaves native orange saw-edged leaves serrated serrated leaves soft spring textures wooly yellow Balearic Islands bend coast coastal conifers danger direction drop hazard limestone majorca Mallorca mediterranean mountain nature pines road rock rocky sea slope Spain travel water