By Damien Knight
Ben Tobin gave this seminar over the karst regions of the Grand Canyon. I arrived late to the seminar, but it was very interesting. When I entered Ben was talking about the morphology of the caves. They are following the fractures into the canyons itself. They mapped the caves from faults and fractures traced in the groundwater. To do that, they had to do dye traces of the different cave entrances.