Glacial deposits explain many of the valley's softer forms, wet pockets, and layered soils. Learn where those deposits appear and why they matter.
Some of the park's most unassuming muddy cuts contain more history than its biggest overlooks.
What Till Looks Like |
Till mixes different rock sizes into unsorted material left by ice, often making slopes feel messy, irregular, and unexpectedly unstable underfoot. |
Why Layers Matter |
Sediment changes help scientists reconstruct water movement, colder periods, and the order in which the landscape opened after glacial retreat. |
Visitor Relevance |
Trails that cross layered wet ground may remain soft long after nearby exposed rock has dried out. |