active activities adults adventure children children’s-playground climbing color colored colorful coloring colors colour coloured colourful colouring colours community equipment families fun kids leisure leisure-area multiple-activities opportunities parental-supervision parents play play-equipment playcenter playcentre playing safe-play safety shelter sheltered slides supervise supervision toys under-cover variety youngsters basketball ping-pong table-tennis abstract background barrier bolders boulders constructed cover covered fitted fitting large limestone local-stone mortar mound perspectives random randomly-coursed retaining-rocks rocks rocky rough rugged secure security shade shadows shaped shapes sharp solid stone stone-walled stones stonework strength strong sunlight sunshine surface surfaced surfaces texture textures uneven variations