Castle Geyser and Tortoise Shell Spring
$100.00 – $1,500.00
In the early morning light Castle Geyser and Tortoise Shell Spring were each generating a tall column of steam. The two thick swirling threads of steam rose straight up, spreading, then merging about 200 feet off the ground, and adding to the large haze of fog hanging over the Upper Geyser Basin. Tortoise Shell Spring is the hottest spring in Yellowstone; temperatures have been recorded as high as 207 degrees, eight degrees above boiling at this altitude.