Theo Allofs / Acacia (Acacia sp) trees in Dead Veil, a dry clay pan that after rare rains fills with water, Namib-Naukluft National Park, Namibi Desert, Namibia

Winfried Wisniewski / Dead trees, Dead Veil, Namib-Naukluft National Park, Namibia

Gerry Ellis / Camelthorn (Alhagi maurorum) in sand dune of dead veil near Sossusvlei, Namib-Naukluft National Park, Namibia

Gerry Ellis / Camelthorn (Alhagi maurorum) trees and calcite between dunes at Dead Veil, Namib-Naukluft National Park, Namibia

Jeff Foott / Ponderosa Pine (Pinus ponderosa) dead tree killed by Mountain Pine Beetle (Dendroctonus ponderosae), Bridal Veil Falls, Yosemite National Park, California

Hiroya Minakuchi / Acacia (Acacia sp) dead trees and sand dune, Dead Veil, Namib Desert, Namibia

Hiroya Minakuchi / Acacia (Acacia sp) dead trees and sand dune, Dead Veil, Namib Desert, Namibia

Ingo Arndt / Camelthorn (Alhagi maurorum) trees and calcite at Dead Veil, Namib-Naukluft National Park, Namib Desert, Namibia