exterior hut hut-roof layers layers-of-thatching light reeds roof roofing shadows shelter textures Thatched thatched-hut thatching thatching-reeds thick barrel container creeping dye empty flow fluid fluid dynamics laminar liquid non-newtonian paint pouring red slow spill stream vessel viscosity viscous cold cover far freezing homes houses icy landscape melt melting mountain natural nature norway norwegian patchwork patchy ridge snow snowy summer white deep mountains plateau remote rock water wild isolated wilderness background bush cloud conifer dense England english Great Britain green hedge high leylandii pattern plant screen sky Sussex texture tree yellow blocks blue children colorful colourful orange play play-things purple puzzles ribbed rubber shaped shapes slabs soft tactile toys