rock layers - a colorful formations of rocks stacked over the hundreds of years. interesting background with fascinating texture

abstract background bank cliffs closeup colorful compressed crack design effect erosion fascinating formation formations geologic geological geology gravel grunge horizontal hundreds incline interesting layer layered layers material mountain natural old over pattern pebble pressure quarry rock rocks rough sandstone sea sedimentary shale slate slope solid stacked steep stone strata stratified stratum striped structure surface texture textured uneven wall years