Mormon Doctrine, pg. 662; “Sacred Grove… It was there that the Father and the Son personally appeared to him, in accordance with their eternal plan, for the hour had come for the ushering in of the dispensation of the fulness of times. (Jos. Smith 2:15-20.)…Ever since, this chosen site, hallowed by Deity’s personal presence, has been known by the saints as the Sacred Grove. It is not a shrine in the sense that many denominations have shrines, nor is there any sanctity now attached to the trees and land there located. But it is a spot held sacred in the hearts of those who believe the truths of salvation, because they glory in the transcendent event which there took place.”
Deuteronomy 16:21-22; “Thou shalt not plant thee a grove of any trees near unto the altar of the LORD thy God, which thou shalt make thee. 22 Neither shalt thou set thee up any image; which the LORD thy God hateth.”
All I can say is that this is scary.