Tullan lake is a spontaneous nude beach located north-west of Södertälje.
The beach, where spontaneous nude bathing has been practised for a long time, is situated in the northern end of the lake.

Take bus 760 or 761 from Södertälje centre to "Morabergsvägen". Walk towards "Kolbotten". About 100 m before the farm, turn right on the path over a field into the woods. At the lake, turn south. It is a 15 minutes walk, approximately.

It is a rock beach with no other conveniences.