Mount Seleya

From Memory Alpha, the free Star Trek reference

Mount Seleya was a sacred mountain located on the planet Vulcan, at the far end of the Vulcan's Forge.

During the 3rd century, Surak discovered his philosophy of pure logic on Mount Seleya, which remained the site where rituals such as the kahs-wan and kolinahr took place.

Surak began the story of the IDIC or "Infinite Diversity in Infinite Combinations" on this mountain. Surak later died here from radiation poisoning, after the final battle between his followers and "those who marched beneath the raptor's wings." That enemy would apparently leave Vulcan and become the Romulans. (ENT: "The Forge", "Awakening", "Kir'Shara")

In 2285, venerable high priestess T'Lar supervised Spock's fal-tor-pan ceremony on Mount Seleya. (Star Trek III: The Search for Spock)

The T'Karath Sanctuary was located roughly 37 kellicams south of Mount Seleya. (TNG: "Gambit, Part II")

The Vulcan ship Seleya was presumably named in honor of this mountain. (ENT: "Impulse")