He did not tell people where he was going. Originally, Collins' body was buried in the side yard of the family house near Crystal Cave. In 1927, against the wishes of many family members except his father, the body was put in a coffin and placed into Crystal Cave. The body was stolen at one point. Since 1989, it has been buried at the Mammoth Cave Baptist Church Cemetery.
Visitors can go to the entrance of Sand Cave, but it is sealed.
A Tale of Obsession in the World's Longest Cave. He and co-author James Borden predict that the known size of Mammoth Cave already the world's longest with more than 350 mapped miles will grow to 1,000 miles as the result of further explorations before the end of the 21st century. It's a new book he co-authored with James D. Borden. Brucker also will appear Saturday after the 8 p.m. performance of Floyd Collins at UK's Singletary Center to speak and take questions. For the 21st year, Roger W. Brucker will teach a course this summer at Mammoth Cave National Park about speleology, the science of caving.