Object · Shaiva · West India · Gokarna (Karnataka) and Deoghar (Jharkhand) both claim it
Atmalinga
Shiva's own linga, granted to Ravana after his penance on the condition that it never touch the ground before Lanka; tricked into setting it down, Ravana could not lift it again, and Gokarna and Deoghar each say it rooted there.
Sources: Mahabaleshwar Temple, Gokarna — Wikipedia; Baidyanath Temple — Wikipedia · see Atmalinga's web