That tracks.

There wasn’t anyone besides Beverly Crusher.

To be clear, the rocks that the mountain is made of are reasonably old (oldest on Earth is closer to 4.0 billion years, but anything >500 million is fairly rare), but the landform of a mountain is a combination of uplift and erosion, which is fairly young. The only source for the age of erosion I could find (didn’t search hard) mentioned the glaciation of the Pleistocene, which seems reasonable.

He came to believe that his celestial father, whom he saw in the visions, was God the Father, his celestial elder brother was Jesus Christ, and he had been directed to rid the world of demon worship.

While convalescing, Hong dreamed of visiting Heaven, where he discovered that he possessed a celestial family distinct from his earthly family, which included a heavenly father, mother, elder brother, sister-in-law, wife, and son.[19] His heavenly father, wearing a black dragon robe and high-brimmed hat with a long golden beard, lamented that men were worshiping demons rather than he himself, and presented Hong with a sword and golden seal with which to slay the demons infesting Heaven.

Hong left Guangzhou on 12 July 1847 to search for Feng Yunshan.[38]Although robbed of all of his possessions, including his demon-slaying sword, by bandits in the town of Meizixun