Mud Volcano

Description

Early explorers to Yellowstone described this feature as a "most repulsive and terrifying sight," a volcano-like cone, 30 feet high and 30 feet wide (9 m by 9 m) with mud erupting to cover tall trees. When Nathaniel P. Langford visited it in 1872, however, he saw "a seething, bubbling mass of mud." It's likely that a violent eruption blew out the side of the cone, leaving the crater seen today. Rich in iron sulfides and powered by heavy gas discharge, the gray-colored water constantly undercuts the back wall.

*Adapted from the NPS Mud Volcano Trail Guide

Feature Type

Not Reported

Inventory ID

MV101

Location

Latitude: 44.62432
Longitude: -110.4345
Survey Date: July 21, 1998

Geographic Area: Hayden Valley

Ranger District Contact: Norris District, Al Miller (307) 344-2501

Feature Data

Data Source	Supplied By	Sample Date	Temp	Vent Temp	pH	Cond	Extended Data

Park		7/21/1998	86°C	0°C	3	2070 µS/cm	No

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