©
JoanRoca: Belgian Spring
©
JoanRoca: Unidentified hot spring
©
JoanRoca: Porcelain Basin
©
JoanRoca: Firehole Spring
©
JoanRoca: Grand Prismatic Spring
©
JoanRoca: Grand Prismatic Spring
©
JoanRoca: Morning Glory Pool - year 2004
©
JoanRoca: Morning Glory Pool - year 2008
©
JoanRoca: Percolate Spring
©
JoanRoca: Abyss Pool
©
JoanRoca: Chromatic Pool
©
JoanRoca: Crested Pool
©
JoanRoca: Shield Spring
©
JoanRoca: The mineral deposits between the pools and the lake Yellowstone.
©
JoanRoca: Runoff entering the Firehole River
©
JoanRoca: Mud Pod