Mount Seleya

Mount Seleya is the name of a sacred mountain on the planet Vulcan where it is said that Surak discovered logic in the 3rd century.

History
Mount Seleya is located at the far end of Vulcan's Forge an pilgrimages are made to it for rituals such as the kahs-wan and where the final stage of the Kolinahr discipline is held.

It is also said that Surak egan the story of the IDIC or 'Infinite Diversity in Infinite Combination' at this mountain. It i also mentioned that Surak died of radiation poisoning after a battle between his followers and those 'who marched beneath the raptor's wings'.

(ENT episode: The Forge, Awakening, Kir'Shara)

In the year 2285, the High Priestess T'Lar supervised the Fal-tor-pan ceremony conducted on Spock at Mount Seleya. (TOS movie: The Search for Spock)

Location
On Mount Seleya resides the Halls of Ancient Thought where the adepts reside who guide young Vulcans. A 'sisterhood' of Unbonded women serve as Healers while a High Priestess guides them.

To reach the Halls is a dangerous task for first the travellers must pass the dangerous Forge after which they must travel up a thousand steps, customarily done so barefoot. Once this is done, the pilgrams reach a plateau beneath the snow stopped peaks with a bridge leading into a cone shaped structure where the Halls resided.

Beneath the bridge lies a chasm where a volcanic river streams which makes the bridge dangerous at times. This is because at night time, the winds pick up speed with such strength that they are capable of toppling a grown Vulcan and make them fall to their death to the magma below.

(TOS novel: Vulcan's Soul Exodus)

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

Myth
The peak of Mount Seleya was also subject to an ancient myth known as the Treasury of Erebus that stated that aterrible ice demon resided within the snow at the mountains top.