Yellowstone Volcano Observatory Webcam The camera view is south-southeast over Yellowstone Lake from the cell phone tower near Fishing Bridge. Stevenson Island is visible within the lake on the right. The view extends down the Southeast Arm between the Promontory (low ridge rising from the lake) and the eastern shore. Above the shore, the acid-bleached Brimstone Basin remains white even when the snows have melted. The Absaroka Mountains in the background are composed of approximately 50-million-year old volcanic rocks that long precede the current volcanic activity at Yellowstone, which started about 2.2 million years ago. We appreciate the assistance of Verizon and Hy-Lander Tower Services in installing the camera system.