Topic: Black Sand Basin is only about 1/2 mile from Old Faithful Geyser. It was named for the course black obsidian sand that surrounds the thermal features there.
1 minute 51 seconds
Written & Presented By:
Park Ranger George Heinz
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Last Updated:
Monday, 03-Mar-2008 02:19:41 Eastern Standard Time
http://www.nps.gov
/archive/yell/insideyellowstone/0016blacksandbasin.htm