Gauri is the Divine Mother who has become this earth nature. Shiva is the Lord of tapasya who helps her to rise to the highest point to which material nature is capable of rising. There she joins the Divine Soul. This union of the Divine Soul and Earth-nature is the theme of Ramayana as well. This union gives birth to Kartikeya, the Flame-child who is the representative of the psychic being. He is the leader of the gods who leads and fights the battle between the gods and the Titans. On the other hand Ganesh is the power of knowledge that destroys all obstacles. He is a special power, a direct formation of the Divine Mother whom Shiva adopts after destroying the pride of being a special instrument of the Divine Mother. Vasuki is the serpent who represents the evolutionary force and Nandi, the Bull, is strength in the service of God. Kailash is the highest peak of earth consciousness to which man can rise through tapasya.
Affectionately,
Alok Da