Ivanna, appointed P7K-172 by the Tau'ri, is a planet in the Milky Way galaxy that has a Stargate. The planet is covered by saltwater oceans dotted with volcanic islands strings. The planet is part of a binary star system, undergoing a periodic cycle of warming and cooling that allows the sea level to rise and fall in a cycle of 100 years as the proximity to their parent stars changes. The world is currently in its warming phase, though its inhabitants don't know this. The planet's Stargate is under water with the ruins around it.
When the first Helots began arriving to the planet, Ivanna was uninhabited, although it had obviously harbored a primitive Mayan civilization once. About 40 years ago, the first Helots from Aegis came here through the Stargate. Since then, regular new influxes of Helots' have always come through the open arms of his fellows, welcoming them to freedom in this new country. Helots named their new home Ivanna, meaning "gift of the gods". Agriculture on the island is not difficult and animals, fruits and vegetables all flourish there. The indigenous mountain range is good for the stonework and they have even discovered veins of surprisingly pure metals, including silver and gold. The city of Demetra is located several miles from the beach, in a defensible area at the base of a series of high cliffs. (RPG: "Living Gods: Stargate System Lords")