Castle Geyser has the largest cone for a cone-type geyser (120 feet around) and looks like the ruins of an old castle tower. It erupts to heights from 60 to 100 feet and lasts about 20 minutes. A noisy steam phase follows that lasts for 30 to 40 minutes. Eruptions occur about every 10 to 12 hours. This geyser could be the oldest geyser in the basin.

Click here if you own or manage this listing.