Pink Cone Geyser

Pink Cone Geyser is a cone-type geyser located right next to the road on Firehole Lake Drive, in the Lower Geyser Basin. Aptly named, its cone features pink geyserite colored by manganese oxide. It is the titular geyser in the Pink Cone Group.

History
Pink Cone was named during the geological survey of 1878, although no eruptions were observed at the time.

During 1887, activity was reported, with eruptions lasting 30 minutes and reaching 5-10 ft.

No activity was recorded between 1889 and 1936, though the geyser was quite active from 1937 until the 1959 earthquake.

Recent Activity
Recently, Pink Cone's intervals have varied from 18 - 29 hours, with most eruptions occurring roughly every 25 hours as of 2017.