Joyce Pinsker: Looking across Union Pacific's Bailey Yard, the world's largest railway classification yard, in North Platte, Nebraska
Joyce Pinsker: Over 140 trains pass through the Bailey Yard every day
Joyce Pinsker: The Golden Spike Tower affords a birds-eye view of the Bailey Yard
Joyce Pinsker: Paul on one of the boardwalks at Hot Springs State Park in Thermopolis, Wyoming
Joyce Pinsker: We're soon to say good-bye to life on the road
Joyce Pinsker: The Teepee Fountain, one of the more intriguing formations in Hot Springs State Park
Joyce Pinsker: Detail of water running down the Teepee Fountain formation
Joyce Pinsker: Ava's Rock & Silver Shop in Thermopolis, Wyoming had some great finds, including lepidolite, banded iron, and Picasso marble
Joyce Pinsker: Typical scenery between Thermopolis and Cody
Joyce Pinsker: Several of the hundreds of pronghorn spotted in the rangelands of Wyoming
Joyce Pinsker: Palisades line the highway near the eastern entrance to Yellowstone NP
Joyce Pinsker: About 20 cars stopped by the side of the road for a glimpse of this bear, Yellowstone NP
Joyce Pinsker: Old Faithful Inn, Yellowstone National Park
Joyce Pinsker: The towering lobby of the Old Faithful Inn, the largest log structure in the world
Joyce Pinsker: We were among a handful still in the hotel at breakfast
Joyce Pinsker: Blue Star Spring, Upper Geyser Basin
Joyce Pinsker: Lone bison in the Upper Geyer Basin
Joyce Pinsker: View over the Upper Geyser Basin
Joyce Pinsker: Upper Geyser Basin, Yellowstone National Park
Joyce Pinsker: The Grand Geyser, the world's tallest predictable geyser, erupting about every four hours
Joyce Pinsker: Beauty Pool, Upper Geyser Basin
Joyce Pinsker: The Giant Geyser, Upper Geyser Basin
Joyce Pinsker: The Morning Glory Pool, Upper Geyser Basin
Joyce Pinsker: Detail of the Morning Glory Pool
Joyce Pinsker: The Grotto Geyser, Upper Geyser Basin
Joyce Pinsker: Upper Geyser Basin
Joyce Pinsker: The Punchbowl, Upper Geyser Basin
Joyce Pinsker: Bison wandering through the Upper Geyser Basin
Joyce Pinsker: Along the Firehole River, Upper Geyser Basin
Joyce Pinsker: Castle Geyser, Upper Geyser Basin