Window of Time
The salt sediments underneath the Arches landscape of Utah originates from 3000 m thick evaporites of a former shallow ocean. The transgression phase of this ancient ocean ended in shallow lagoons with growing saltiness of the water when cut off from the main ocean basin. The ocean evaporated in an arid zone environment like Death Valley, hence enormous salt lake sediments developed. This geological Paradox formation created the geomorphology of today's landscape. The arches itself are short-lived structures. Several large arches already collapsed during our lifetimes.
Pentax K2, Pentax 28mm, f/22, 1/4sec, Kodak Ektachrome E6, ISO 100, polarization filter, tripod