A fly-fisherman takes advantage of an early Wyoming morning to ply one of Yellowstone National Park's prized trout streams.  

Forest fires are part of nature's cycle to renew the park. The birds don't seem to mind, as many build nests in the burned or dead trunks of Yellowstone's trees.  

Spring brings snowmelt runoff to Yellowstone's high-alpine areas.  

Expect to see plenty of waterfalls in any visit to Yellowstone. Eons of erosion have carved gullies in the Rocky Mountains that reward hearty travelers with amazing vistas.  

Steam rises in the early morning from geothermal vents spread around Yellowstone.  

Sunrise exposes the geothermal rivulets that spill over Yellowstone's soft soil.  

One of Yellowstone's earliest residents, the unavoidable American buffalo, forages for food in the morning fog.  

Morning fog along the treeline in Yellowstone  

Pools of melted snow and steam vents are just one of the many otherworldly sights travelers are likely to find in the park.  

A fly-fisherman navigates the fireholes and steamvents of Yellowstone National Park in search of a place to cast.