Images

Vegetation along bank of Snake River with view of treeline and hovering clouds.

Trees cast in shadow lie in the foreground as mountains rise in the back. The Snake River flows at the bottom of step-like slopes.

View of Snake River with mountains in background and clouds overhead.

Sloping landform with a cavity that opens out to the shore. Vegetation thickly covers a sloping face. Other landforms can be seen behind, also covered in vegetation.

Islands with angular landforms.

This photograph highlights the grandeur of the mountains and plains. The group of trees in the left foreground is part of a larger forest.

Snake River with view of hovering clouds, trees and mountains in background.

View of Mu Ko Thong (Marine) National Park.

Rocky landforms covered in vegetation next to a beach.

Sloping landform with a cavity that opens out to the shore. Other landforms can be seen behind, covered in vegetation.

Sheer cliffs covered in vegetation encircling a lentic body of water.

USGS scientist measuring pH, Specific Conductance and dissolved oxygen in a remediation ditch constructed with local volcanic rock possessing some acid neutralizing capacity.  

Brown's Gulch is below the Brooklyn Mine, a few miles north of Siverton, Colorado, in the Mineral Creek basin.

Cement Creek following storm event in July, 2004. Note the orange discoloration of the stream derived from weathering of bedrocks and from mined areas. This type of event happens frequently in the Animas Watershed near Silverton, Colorado. View is to the south, with Kendall Mountain in the distance.

Hindu Kush peak rises to about 17,000 feet.

Scenic Panjsher Valley hosts emerald deposits

Many aspen groves in Yellowstone National Park are failing to regenerate.

This cuckoo bee, or Nomada vegana, is a native bee species associated with open grassland habitats in northwest Indiana. It is a parasitic bee that lays its eggs in nests of other bees.

Balanced Rock, a famous attraction in Arches National Park. Photograph taken after noon.

Cosby Creek under average flow conditions in Great Smoky Mountains National Park near the Cosby Campground near Cosby, TN

The Alluvial Fan is a fan-shaped area of disturbance in Rocky Mountain National Park. It was created on July 15, 1982, when the earthen Lawn Lake Dam above the area gave way, flooding the Park and nearby town of Estes Park with more than 200 million gallons of water. Enormous boulders were displaced, and trees and earth were ripped from the ground.

USGS' Steve Hanser holding a Brewer's sparrow (Spizella breweri).