Yosemite's ultra-deep canyon may have been carved in part by a ghost volcano and river, provocative research suggests
When you buy through links on our internet site , we may bring in an affiliate perpetration . Here ’s how it works . A provocative new surmisal suggest that Yosemite Valley was carved by an ancient volcano and a disappearing river , both of which have long since eat at away . geologist have long debated why Yosemite Valley is so deep , with walls that tower up to 4,000 feet ( 1,219 meters ) above the valley floor ....