Biscuit Basin is located only a few miles north of Old Faithful Village on the Grand Loop Road in Yellowstone National Park. A 1/4-mile boardwalk allows visitors to take a self-guided tour through Biscuit Basin that will take only 20 to 30 minutes. Biscuit Basin got its name from the biscuit-like deposits that once surrounded the bright blue water of Sapphire Pool. In 1959, Sapphire Pool began erupting violently as a result of the Hebgan Lake earthquake which measured a magnitude 7.5 on the Richter Scale over 20 miles away to the northwest. Sapphire's violent eruptions destroyed most of these biscuit-like features. Although the "Biscuits) are ot as prominent as they were in the past, this amazingly blue pool is worth a visit. Pick up an Old Faithful Area Trail Guide at any visitors center and read about all the different features and stops around Biscuit Basin. For example, across the road from Biscuit Basin is another grouping of thermal features, including Artemisia Geyser. The trail will continue on for about a mile, leading you into the Upper Geyser Basin in the Old Faithful Area. Along the way you will see some hidden thermal features that can't be seen from the road. And you will continue to be awed by the stunning views of the landscape that surrounds you.