Question: The cave that contained the mummified remains of the Si-Te-Cah tribe was placced on the National Register of Historic Places in what year?

full_context: Document 1: Naco-Mammoth Kill Site: The Naco Mammoth Kill Site is an archaeological site in southeast Arizona, near Naco, Arizona. The site was reported to the Arizona State Museum in September 1951 by Marc Navarrete, a local resident, after his father found two Clovis points in Greenbush Draw, while digging out the fossil bones of a mammoth. Emil Haury excavated the Naco mammoth site in April 1952. In only five days, Haury recovered the remains of a Columbian Mammoth that had been killed by the use of at least 8 Clovis points about 10,000 years ago. The Naco site was the first Clovis mammoth kill association to be identified.
Document 2: Cave Rock Tunnel: The Cave Rock Tunnel is a dual bore highway tunnel on U.S. Route 50 (US 50) along the eastern shore of Lake Tahoe approximately seven miles (11.4 km) north of Stateline, in Douglas County, Nevada, United States. To the Washoe Indian Tribe, Cave Rock (Washo: De ek Wadapush ) is considered a sacred place and the tribe has placed restrictions on recreational activities in the vicinity of the tunnel.
Document 3: Little People of the Pryor Mountains: The Little People of the Pryor Mountains (known as Nirumbee or Awwakkulé in the Crow language) are a race of ferocious dwarves in the folklore of the Crow Nation, a Native American tribe. The Little People were also seen as imparting spiritual wisdom, and played a major role in shaping the destiny of the Crow People through the dreams of the legendary Crow chief, Plenty Coups.
Document 4: Kwäday Dän Ts'ìnchi: Kwäday Dän Ts'ìnchi (meaning "Long Ago Person Found" in Southern Tutchone), or Canadian Ice Man, is a naturally mummified body found in Tatshenshini-Alsek Park in British Columbia, Canada, by a group of hunters in 1999. Radiocarbon dating of artifacts found with the body placed the age of the body at between 300 and 550 years. The find was comparable in condition and scientific value to Ötzi the Iceman, remains dating to 3300 BC that were found in the Ötztal Alps in 1991.
Document 5: Pitt Lake's lost gold mine: Pitt Lake's Lost Gold Mine is a legendary lost mine said to be near Pitt Lake, British Columbia, Canada, the supposed wealth of which has held the imagination of people worldwide for more than a century. Ever since the years of the Fraser Canyon Gold Rush prospectors and adventurers have been looking for the mine and gold-rush rumors have evolved into legends repeated and enriched over time. The mysterious riches are known as Slumach’s Lost Mine, or Lost Creek Mine.
Document 6: Sloan Canyon National Conservation Area: Sloan Canyon National Conservation Area is a National Conservation Area (NCA) administered by the United States Bureau of Land Management (BLM). It includes the Sloan Petroglyph Site which was listed on the National Register of Historic Places on December 19, 1978. It is located south of Las Vegas, Nevada, access is available from Las Vegas Boulevard, near the Del Webb Anthem development in Henderson. Sloan Canyon NCA protects 48438 acre .
Document 7: Gap Cave: Gap Cave is located just underneath Pinnacle Overlook in the Cumberland Gap National Historical Park, Lee County, Virginia. Currently, the cave has a surveyed length of 18.5 miles and is the 42nd longest cave in the United States and 154th in the world. There are six known entrances: the Gap Cave Entrance (also known as the King Solomons Cave Entrance), an artificial entrance, known as the Cudjo's Cave Entrance, the Stream Entrance, the Soldiers Cave Entrance, the Big Saltpeter Cave Entrance, and the Wellhole. All lead into the same cave, Gap Cave.
Document 8: History of Salt Lake City: Originally, the Salt Lake Valley was inhabited by the Shoshone, Paiute, Goshute and Ute Native American tribes. At the time of the founding of Salt Lake City the valley was within the territory of the Northwestern Shoshone, who had their seasonal camps along streams within the valley and in adjacent valleys. One of the local Shoshone tribes, the Western Goshute tribe, referred to the Great Salt Lake as "Pi'a-pa", meaning "big water", or "Ti'tsa-pa", meaning "bad water". The land was treated by the United States as public domain; no aboriginal title by the Northwestern Shoshone was ever recognized by the United States or extinguished by treaty with the United States. Father Silvestre Vélez de Escalante, a Spanish Franciscan missionary is considered the first European explorer in the area in 1776, but only came as far north as Utah valley (Provo), some 60 miles south of the Salt Lake City area. The first US visitor to see the Salt Lake area was John Chugg in 1824. U.S. Army officer John C. Frémont surveyed the Great Salt Lake and the Salt Lake Valley in 1843 and 1845. The Donner Party, a group of ill-fated pioneers, traveled through the Great Salt Lake Valley a year before the Mormon pioneers. This group had spent weeks traversing difficult terrain and brush, cutting a road through the Wasatch Mountains, coming through Emigration canyon into the Salt Lake Valley on August 12, 1846. This same path would be used by the vanguard company of Mormon pioneers, and for many years after that by those following them to Salt Lake.
Document 9: Lovelock Cave: Lovelock Cave (NV-Ch-18) is a North American archaeological site previously known as Sunset Guano Cave, Horseshoe Cave, and Loud Site 18. The cave is about 150 feet long and 35 feet wide. Lovelock Cave is one of the most important classic sites of the Great Basin region because the conditions of the cave are conducive to the preservation of organic and inorganic material. The cave was placed on the National Register of Historic Places on May 24, 1984. It was the first major cave in the Great Basin to be excavated, and the Lovelock Cave people are part of the University of California Archaeological Community's Lovelock Cave Station.
Document 10: Wheelbarrow Mine: The lost Wheelbarrow Mine is claimed to have been located about 10 mi from Potlatch in Latah County, Idaho. The reported location is 3,871 feet above sea level, at coordinates 46.9975° N, 116.7833° W. The mine, believed to have been dug prior to 1890, was said to have produced $20,000 in gold, before a falling-out between its operators led to its abandonment. One of the operators later returned to the area to find the mine again, but was unsuccessful. In June 1939, miners with the Fitsum Mining company uncovered an abandoned mine matching the description of the Wheelbarrow mine, containing human bone presumed to belong to the other operator.
Document 11: Big Bone Cave: (Big) Bone Cave is a cave located in Van Buren County, Tennessee, in the community of Bone Cave that is named after it. It is notable both for its history and current recreational use. It is listed on the National Register of Historic Places and a designated National Natural Landmark. It is a 400 acre State Natural Area managed by Rock Island State Park. It is named for the discovery of the bones of a giant ground sloth in 1811. The cave was operated as a saltpeter mine, notably during the War of 1812 and the American Civil War. A variety of natural remains and human artifacts has been well preserved in the dry atmosphere of the cave. The cave is the 10th longest mapped cave in Tennessee.
Document 12: Sirgenstein Cave: The small Sirgenstein Cave, German: "Sirgensteinhöhle" is situated 565 m above sea level inside the 20 m high "Sirgenstein", a limestone rock. The cave sits 35 m above the Ach River valley bottom in the central Swabian Jura, southern Germany. Archaeologist R. R. Schmidt excavated the site in 1906 during which he identified indices of prehistoric human presence. He recorded the complete stratigraphic sequence of Palaeolithic and Neolithic origin. In his 1910 analysis Schmidt inspired future archaeologists with his pioneering concept of including the excavation site within its geographic region, contextualizing it within a wide scientific spectrum and demonstrated valuable results as he correlated the Sirgenstein layer structure to those of prehistoric sites in France.
Document 13: Si-Te-Cah: According to Paiute oral history, the Si-Te-Cah, Saiduka or Sai'i are a legendary tribe whose mummified remains were allegedly discovered under four feet of guano by guano miners in what is now known as Lovelock Cave in Lovelock, Nevada, United States. Although the cave had been mined since 1911, miners did not notify authorities until 1912. The miners destroyed many of the artifacts, but archaeologists were still able to retrieve 10,000 Paiute artifacts from the cave. Items included tule duck decoys, sandals, and baskets, several dating back over 2000 years.
Document 14: Ursa Minor (cave): Ursa Minor Cave is part of Sequoia National Park, a naturally formed system of caves in California's Sierra Nevada. The cave was discovered in August 2006 by four cave explorers from the Cave Research Foundation who found a softball-sized hole on a cliff face in the mountains. After widening the hole to allow for human entry, the explorers discovered one of the most spectacular caves in the western United States. The cave has since been named "Ursa Minor," because of the large bear skeleton found in the cave.
Document 15: On Your Knees Cave: On Your Knees Cave (49-PET-408) is an archaeological site located in southeastern Alaska (Prince of Wales Island). Human remains were found at the site in 1996 that dated between 9,730 ±60 and 9,880±50 radiocarbon YBP (Years Before Present) or a calendrical date of 10,300 YBP. In addition to human skeletal remains, stone tools and animal bones were discovered. DNA analyses performed on the human skeletal remains document the presence of mitochondrial haplogroup D which occurs widely in the Americas. Isotopic analysis indicated that the individual had a primarily marine based diet.
ground_truth: 1984