abstract background bare bark black brown colors colours dry gnarled gray grey grooves layers lines mottled peeling rough shadows shapes sunlight surface texture textured textures tree tree trunk trunk build house Coconut branch Coconut leaves cool dry grass Eco-friendly environment insulator low-cost rural rustic shade shelter skill sustainable temporary thatch thatch palm Thatched Roof thatching weave alone autumn blades brittle close-up creased crinkled dead deciduous fall fallen grass green groundcover lawn leaf lone nature surfaces symbol veined veins amber Betula birch bracken copper dried England english ferns footpath forest Great Britain heathland landscape natural path russet rusty spring Sussex track trail trees trunks undergrowth woodland Alice Springs Australia bush central Australia desert-country desert-region gully height high hot inland outback ridge rocks rocky rugged scrub shrubbery sunshine terrain