The cultural wealth of the people Mordvin accumulated in the oral art. However, there was no single epic tales. Since the XIX century there were attempts to link the different product in one cycle. In 1980 it managed to make philologist, folklorist A. M. Sharonov, created the epic "Mastorava".

Mastorava is the title of a Mordvin epic poem based on Mordvin mythology, published in 1994 by A. M. Sharonov in the Erzya language, with a Moksha language version announced. The poem consists of five parts entitled "The Universe", "Antiquity", "King Tyushtya's Age", "The Heroic Age" and "The New Age".

Mastorava is an Earth goddess in Mordvin mythology. The name mastor-ava literally means "earth woman", mastor being the Mordvin for "earth, land".

In the Mastorava epic, Tyushtya is a peasant elected by people to be the king and leader of Mokshan and Erzyan clans alliance and the war lord of allied army. During his rule, Mordvinia stretched from Volga to Dnieper and from the Oka to the Black Sea.

In Mordvin mythology, Tyushtya is a moon god, son of the thunder god and the mortal girl Litova. He is changing his age every month, following the phases of the Moon.

"Mastorava" - a landmark creation Mordvin people.