V.C. Wald: Porcelain Basin, Norris Geyser Basin: Very hot, and very cold
V.C. Wald: Congress Pool, Norris Geyser Basin
V.C. Wald: Ghost tree & milky blue thermal pools, Porcelain Basin, Norris Geyser Basin
V.C. Wald: Rime-covered trees, Norris Geyser Basin
V.C. Wald: Deep snow on the boardwalk, Norris Geyser Basin
V.C. Wald: Porcelain Basin, Norris Geyser Basin
V.C. Wald: Porcelain Basin, Norris Geyser Basin
V.C. Wald: Rime-covered trees, Norris Geyser Basin
V.C. Wald: Ghost trees and steam
V.C. Wald: Photographers overlooking Norris Geyser Basin
V.C. Wald: Norris Boardwalk
V.C. Wald: Snow pillows
V.C. Wald: Yellowstone Forever bookstore
V.C. Wald: Bighorn ewe, Gardner Canyon
V.C. Wald: Bighorn ewe with tracking collar
V.C. Wald: Juvenile bighorn sheep
V.C. Wald: Juvenile bighorn sheep
V.C. Wald: Bighorn ram at the Confluence
V.C. Wald: Bighorn rams chewing cud at the Confluence
V.C. Wald: Mount Haynes and the Madison River
V.C. Wald: Bison bull along the Madison
V.C. Wald: Bison bull along the Madison: ready for spring
V.C. Wald: Bison bulls eking out a winter meal
V.C. Wald: Bison bulls eking out a winter meal under Mount Haynes at the Madison River
V.C. Wald: Above the Madison
V.C. Wald: Looking west along the Madison
V.C. Wald: Mount Haynes and the Madison River in freezing fog
V.C. Wald: "Bobby socks" trees at Tangled Creek
V.C. Wald: The Morning Watch at Tangled Creek
V.C. Wald: Trumpeter swan & cygnet, Yellowstone River, Hayden Valley