V.C. Wald: Back-country Yellowstone
V.C. Wald: Back-country geyser basin
V.C. Wald: Back-country geyser basin
V.C. Wald: Back-country geyser basin
V.C. Wald: Back-country geyser IE
V.C. Wald: Back-country geyser IE
V.C. Wald: Back-country geyser, quiescent state
V.C. Wald: Sulfur and bacteria, hydrothermal runoff
V.C. Wald: Black lichen, Hayden Valley
V.C. Wald: Bison bones, Hayden Valley
V.C. Wald: Bleached bison bones, Hayden Valley
V.C. Wald: Tiny vent with sulfur deposits
V.C. Wald: Sulfurous deposits
V.C. Wald: Mud Volcano geyser basin, Yellowstone National Park
V.C. Wald: Grand Prismatic Spring from the trail to Fairy Falls
V.C. Wald: Grand Prismatic Spring from the trail to Fairy Falls
V.C. Wald: Grand Prismatic Spring from the trail to Fairy Falls
V.C. Wald: Grand Prismatic Spring from the trail to Fairy Falls
V.C. Wald: Grand Prismatic Spring from the trail to Fairy Falls
V.C. Wald: Fairy Falls
V.C. Wald: Fairy Falls, Yellowstone National Park
V.C. Wald: Fairy Falls
V.C. Wald: Fairy Falls
V.C. Wald: Deadfall from Yellowstone 1988 fires (some logs trimmed for hiker safety)
V.C. Wald: Muddy! Trail to Fairy Falls
V.C. Wald: Interesting fungus on downed log, trail to Fairy Falls
V.C. Wald: Yellowstone Lake, Yellowstone National Park
V.C. Wald: Yellowstone Lake, Yellowstone National Park
V.C. Wald: Jenny Lake, Grand Teton National Park
V.C. Wald: Kayaking Jenny Lake, Grand Teton National Park