Lake Karas is one of the most explored lakes of the republic, it was formed 10 - 12 thousand years ago as a result of the limestone rock failure of the interfluves of the Bol'shaya and Malaya Kokshaga.
The lake is closed from visiting tourists completely. The sanatoriums and villas of Mari “elite” are situated on it. That’s why the lake is guarded by fence.
The lake is located in the 3km to the west to route Yoshkar-Ola – Tcheboksary. The turning to the lake is to the south of Yoshkar-Ola on 23km.