- Bullfrog
- Bully Christmas!
Model: Atlas Barrett-Ross - Cabin roof detail
Rock & Ridge Trail, Blue Knob State Park - California
- Caught
Blue Knob State Park, Pennsylvania - Chill
- Chill II
- Chopped Timber
High Mountain, Wayne, New Jersey - Clearing
- Cliche #23
- Cluster of Monotropa uniflora
This unusual flowering plant, which goes by such names as Indian Pipe, Ghost Flower, or Corpse Plant, is white because it lacks chlorophyll. It depends on a fungus for its nutrients; the fungus, in turn, depends on other plants. Emily Dickinson called it "the preferred flower of life," and her first volume of poetry (published posthumously) had the flower on its cover. - Cole Run Falls (I)
- Cole Run Falls (II)
- Conemaugh Gap in Autumn
The Conemaugh Gap of the Conemaugh River in Cambria County, Pennsylvania, is the deepest gorge east of the Mississippi, at 1,350 feet deep. - Conemaugh Viaduct - Fall Colors
The original 1833 single-arch Conemaugh Viaduct was destroyed in the Johnstown Flood of 1889. During the flood, debris built up behind the viaduct, holding back the water. When the viaduct suddenly failed, the water was released in a powerful burst that destroyed the nearby town of Mineral Point, and then Johnstown itself. This double-arched replacement was built in the 1890s to replace the destroyed viaduct, and today it carries Norfolk Southern's Pittsburgh Line, the successor to the Pennsylvania Railroad Main Line. - Corn Ahead
- Corn Stand
- Cornfield Sunrise
- Cottage
- Crown Vetch