activities adventure adventure-playground angles children children’s-playground climbing down equipment families fun kids leisure light log-steps lookout park path paths peaceful perspective playground playing public quiet relaxing rocks rocky rocky-mound safety shade shaded shadows shady sheltered stairs steps sunlight sunshine tranquil view abstract background beginning bolders boulders color colour cover covered creeper green greenery growing growth large mortar mound new-growth plant potential retaining-rocks rough small sprouting surface texture textures vegetation wall architectural-elements care caution colors colours concrete handrails height high open plants railing rails slabs slope sloping steep stones stonework strong sturdy style barrier constructed fitted fitting limestone local-stone perspectives random randomly-coursed rugged secure security shaped shapes sharp solid stone stone-walled strength surfaced surfaces uneven variations variety active carved carvings crawling dark entrance exit hiding shelter suburban trees tunnel woodwork cubby hut