Classified for credit

Colorado state park with a triple-waterfall travertine formation and limestone caves — covers karst geology, travertine deposition chemistry, and Western Slope ecology.

Former chemical weapons site converted to urban wildlife refuge — covers prairie ecology, bison and raptor biology, and environmental remediation science.

Colorado state park featuring dramatic hogback ridges and Dakota sandstone formations — covers geology, Front Range ecology, and prehistoric fossil-bearing strata.

State park visitor center in a dramatic red-rock landscape — covers Colorado geology, erosion processes, and Front Range ecosystems.

Tropical indoor exhibit at Denver Zoo featuring rainforest ecosystems, reptiles, and amphibians — supports biodiversity and biome geography studies.

Front Range state park with diverse habitats, ranger programs, and geology features — covers ecology, geology, and outdoor skills in the Colorado foothills.

Dramatic series of waterfalls in a Pikes Peak sandstone canyon — covers Colorado Front Range geology, erosion, and the physical geography of the Rampart Range.

Large-carnivore sanctuary in southeastern Colorado housing rescued bears, wolves, and big cats — wildlife biology, captive wildlife rehabilitation, and conservation.

Large carnivore rescue sanctuary with elevated walkways — covers wildlife conservation, animal behavior, and the ethics of captive wildlife management.

Canyon trail corridor along the South Platte River featuring bighorn sheep habitat, riparian ecology, and geology of the Front Range foothills.

Self-guided wildlife drive through a reclaimed Superfund site now managed as a national wildlife refuge — ecology, habitat restoration, and wildlife biology.

Federal refuge in the San Luis Valley hosting sandhill cranes and migratory waterfowl — covers wetland ecology and bird biology.

Federal wildlife refuge in the San Luis Valley with visitor center — covers migratory bird ecology, wetland habitats, and Rocky Mountain watershed biology.

High-altitude National Wildlife Refuge visitor center in North Park — covers pronghorn and sage-grouse biology, high-plains wetland ecology, and Colorado wildlife management.

Self-guided auto tour through North Park's sagebrush wetlands — supports field observation of migratory waterfowl, pronghorn ecology, and high-altitude habitat study.

Colorado state recreation area along the upper Arkansas River covering riparian ecology, whitewater hydrology, and Rocky Mountain geography.

Riparian nature preserve along the Colorado River corridor — supports bird observation, riparian ecology, and high-desert biology.

Federal wildlife refuge in the San Luis Valley — high-desert wetland ecology, migratory waterfowl biology, and Rocky Mountain geography.

State wildlife area centered on a reservoir lake — bird ecology, wetland biology, and wildlife observation with a staffed nature center.

Front Range reservoir state park and Important Bird Area — covers migratory bird ecology, wetland biology, and Colorado plains habitat.

Jefferson County reservoir park with trails, wetlands, and wildlife habitat — supports ecology, geography, and outdoor physical education.

City-operated nature center with trails and native habitat exhibits — covers Front Range ecology, wildlife identification, and riparian biology.

High-altitude alpine botanical garden with labeled native and alpine plant collections — supports botany, plant adaptation, and mountain ecology.

Urban nature center with wetlands, trails, and bird habitat — covers Front Range ecology, watershed biology, and urban conservation in Denver.