it was, in part, caused by the extreme secrecy of the original finders. Several years later, after hearing rumors of another cave, Vearl J Manwill came with a group of associates (which later became the Payson Alpine Club) in search of the mysterious hidden cave. On 14 February 1921 he rediscovered it (although many sources credit him as having discovered the cave). He immediately shared the information with the other members of the group. Having in mind the extreme damage that had resulted in Hansen Cave, that very night, the group dedicated themselves to the preservation of the cave. Of that night, Manwill wrote in his journal that they discussed ways "to preserve its beauty for posterity instead of allowing it to be vandalized as Hansen's Cave had been." Shortly thereafter they reported their find to the US Forest Service. Later that fall, on 15 October 1921, George Heber Hansen and Wayne E. Hansen, Martin Hansen's son and grandson, were hunting on the other side of the canyon. While using binoculars to try to find deer, they came across another hole in the mountain, in between the other two caves. In a few days they came back, with 74-year-old Martin Hansen. Martin was the first to enter the cave, now called Middle Cave. Current tours of the cave system enter the caves though a manmade entrance very close to the entrance discovered by Martin Hansen. Passing through a manmade tunnel, tours continue on to Middle Cave, before passing through another manmade tunnel to Timpanogos Cave. Finally, tours return to the surface through a manmade exit near the original entrance. Administration Although the site was designated a national monument on October 14, 1922, the site was initially developed and maintained by the U.S. Forest Service. The National Park Service took over management in 1933. A number of park structures were built by the Works Progress Administration in the 1930s and early 1940s. The Timpanogos Cave Historic District was designated in 1982 to include these structures. Middle Cave and Timpanogos Cave were discovered in an era where their formations and resources could be protected. The National Park Service, which oversees and preserves the cave complex, has continued to develop new ways to retain its natural features, including limiting lighting in the caves to retard growth of invasive organisms. Preservation is a high priority. The resource management team at the monument is actively