MT. ALDER
WILLOW
(0.4 mile)
3 THE NEW SOUTHWEST ENTRANCE STATION was completed in the summer of 1966. Entry permits, which are required during the summer season, are sold here.
(0.3 mile)
4 THE VISITOR USE BUILDING was also completed in the summer of 1966. It is designed primarily for winter use with the ski slopes nearby. Lunches, souvenirs and information may be obtained here in the summer season also.
(0.8 mile)
5 SULPHUR WORKS is the most easily accessible hydrothermal area in the Park. It is probably part of the central vent system of ancient Mt. Tehama which is described at No. 7. A short paved trail leads to the sputtering hot springs, steaming fumeroles and hot bubbling mud pots. For your own safety be sure to stay on the trails in any of the thermal areas. Slippery clay and thin crusty coverings could lead to a dunking in scalding hot water and mud. Most water in the thermal areas of the Park contain sulphurous or sulphuric acid, so avoid getting it on your clothes. The odor is mainly that of hydrogen sulphide. Much of the white clay is tinted yellow, tan or pink by mineral impurities, chiefly iron oxides.
The name Sulphur Works was first used in 1865 when efforts were made by T. M. Boarman and Dr. M. Supan to develop the sulphur and clay potentialities of the area. This land was filed upon originally as a mining claim but was actively used only for the tourist trade beginning about 1940. Some of the non-acidic thermal water was used for hot baths. The property was acquired by the Federal Government in 1951 and added to the National Park to be used as a natural thermal area exhibit.