ascent blue challenge climb climbing exercise green grip hand handhold hold horizontal leisure mountain plank planks practise red sport vertical wall wood wooden yellow circus car classroom door forest long orange outdoor Rolling stock stairs state park transport tree vehicle wagon windows wooden wagon activities activity aim backboard background backing-board ball-game basketball basketball-basket basketball-board basketball-hoop black-and-white board equipment frame game grayscale greyscale hoop image isolated light mesh metal monochrome net outdoors park public recreation rectangles rectangular rim shoot shooting shot sporting-equipment strong target training weathered