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Bernard Weyer discovered Grand Caverns in 1804 while trying to retrieve one of his traps. Weyers cave open for visit in 1806, making it America's oldest caves and sustained operation performance. These caves are also referred to as the Shenandoah grottoes, until in 1926 was named Grand Caverns. In 1973, it was declared a national natural landmark, then by on October 1, 2009, the town has the same name cave grottoes, therefore, UVRPA dissolved. Since its discovery in 1804, the cave has experienced several owners and name changes. Within a very short time, after the discovery, the landlord tried to Amon his name or Amen caves. To commemorate the discovery of more than one hundred years, the public back quickly as Weyers Cave. In 1974, Ms.Carol will be given on its property valley park service, which owns the cave until 2009.