sentences:  Two brothers died from influenza, and since the ground was frozen solid with and covered in snow, they were buried in what was thought to be only a hole, as returning them to their tribal headquarters in Peach Springs risked spreading the flu.In 1935, the Civilian Conservation Corps and the Works Progress Administration made an agreement with Peck to build a new entrance to the Caverns.In 1962, another entrance was built by blasting a shaft into the limestone and installing a large elevator.