 In 1947 Van Tassel moved to Giant Rock, near Landers in the Mojave Desert, California, where he established a large UFO Center.This became the most successful and well-known UFO meeting center of the time.As one of the founding "fathers" of the modern religious ufologies, Van Tassel also created arguably the most prominent UFO group established in the US in the late 1940s and early 1950s, although not as influential or well-known today.