| We traveled to Idaho this week for a family reunion with Becky's family. We met Grandma and Grandpa, Joe, Sarah, Zina, Joe, Keri, Josiah, Sawyer, Hayden, Gage and Barbara in Island Park and spent a few days exploring Yellowstone National Park. One stop was at Mammoth Hot Springs, a giant terraced formation, largely made of travertine. In the photo, Josiah, Sophie, Grandpa, Barbara and Zina are standing in front of Liberty Cap, an extinct geyser. One of the Joe's is a geologist and we all benefited from his mini tutorials on the local geology. The canyon walls get their color from altered rhyolite. We suppose Yellowstone National Park is a catchier name than Altered Rhyolite National Park. |