During this period, a large number of myths and legends developed surrounding Gilgamesh. Five independent Sumerian poems narrating various exploits of Gilgamesh have survived to the present. Gilgamesh's first appearance in literature is probably in the Sumerian poem "Gilgamesh, Enkidu, and the Netherworld". The narrative begins with a "huluppu" tree—perhaps, according to the Sumerologist Samuel Noah Kramer, a willow, growing on the banks of the river Euphrates. The goddess Inanna moves the tree to her garden in Uruk with the intention to carve it into a throne once it is fully grown. The tree grows and matures, but the serpent "who knows no charm," the "Anzû"-bird, and "Lilitu", a Mesopotamian demon, all take up residence within the tree, causing Inanna to cry with sorrow.