In the year 1200, lived an old man called Dukuh Jumpungan, he was from mount Kila (considered to be in the Klungkung Regency). This aged man owned a boat that had a magical power.

Legend has it that whenever he sailed with his boat, everything he encountered and struck with his boat would become an ocean.

One day, Dukuh Jumpungan heard that there was a very sacred mountain called Mount Tohlangkir. Dukuh Jumpungan was challenged by himself to prove the magical power of this boat by hitting the sacred mount Tohlangkir. He wished he could make Mount Tohlangkir disappear and became an ocean.

He sailed in a southeast direction from Padang Bay, and purposely ran his boat into mount Tohlangkir. A very dreadful collision occurred and unfortunately the boat rebounded shakily, and finally sank.

An island appeared in the area where the boat rebounded shakily and is now called Nusa Ceningan, the place where his boat sank became an island and is now called Nusa Lembongan.