GEYSER BLAST TERRIFIES TOURISTS: People at Yellow Stone park were sent fleeing after a geyser launched a plume of steam, rocks, and debris into the sky. ABC's Rhiannon Ally has witness' accounts. | World News Now

Tourists at Yellowstone National Park panicked after a Biscuit Basin geyser exploded on 23rd July and hot water blew up into the air. Several witnesses posted videos on social media Yellowstone Park rangers confirmed no injuries occurred during the Biscuit Basin geyser's hydrothermal explosion. However, significant damage was reported to the surrounding boardwalk, which is now closed to the public, as shown in photos. #YellowstoneNationalPark #BainGeyser #Explosion #News | ET NOW