Arachne Solara is the nickname of an otherwise unnamed deity who may be the Goddess of Nature in Glorantha. Her origins are mysterious and subject to speculation, but there are strong indications that she is the ghost of Glorantha, the Mother of the Universe. Philosophers claim that she even extracts respect from the great gods of the major pantheons.
Arachne Solara first comes to notice in the tale of the Great Compromise, wherein Orlanth, Yelm and the other deities in the Underworld swear pacts and oaths to preserve themselves. The plan upon which they agreed is said to have been created by Arachne Solara, based upon mutual support between all the remaining world.
Arachne Solara appears in one of two forms. In her dark aspect she has the form of a woman’s body from the waist up, though mounted upon the thorax and bloated abdomen of a huge spider. Her face is beautiful, although her teeth are sharp, and her head is haloed in a gleaming white fire. In her light aspect she is tall, slender, and radiantly beautiful. A great mass of jet-black hair erupts from her head and writhes about her body. The hair obscures much of her body, but always reveals her face.