Approximately 2 kilometers west of Djúpivogur are Djúpavogskörina nice geothermal hot tub. the are about 100 meters below the Ring Road. there is ia small parking below the road and bedind a small hill alittlebit further from the road you can find the hot-tub.
GPS: N64° 39.207′ W14° 20.507′
Make sure to leave no trace and even clean up if someone has left empty cans or other trash there.