'(<a href="http://www.j-archive.com/media/2004-10-19_J_29.jpg" target="_blank">Sarah of the Clue Crew reads from Yellowstone National Park.</a>)  The gases emitted by Yellowstone's thermal features contain this element--atomic number 16--accounting for a distinctive smell'
sulfur
YELLOWSTONE NATIONAL PARK: The gases emitted by Yellowstones thermal features contain this element--atomic number 16--accounting for a distinctive smell
The gases emitted by Yellowstone's thermal features contain this element--atomic number 16--accounting for a distinctive smell
The gases emitted by Yellowstone's thermal features contain this element--atomic number 16--accounting for a distinctive smell
YELLOWSTONE NATIONAL PARK
sulfur
YELLOWSTONE NATIONAL PARK