pHil____:
Midway basin
pHil____:
Corvus corax (Raven/Grand Corbeau)
pHil____:
Bison bison
pHil____:
Lower falls
pHil____:
Cervus elaphus (Elk/Cerf)
pHil____:
Mammoth
pHil____:
Coyote & Elk
pHil____:
Geyser water
pHil____:
Alga