The Grotto of Exile is the newest map to Metin2UK. The minimum level to enter is 75.
One reaches the grotto by speaking with the guard, Koe-Pung, in Joan, Pyungmoo, Yongan or in Orc Valley. In order to pass the guard, you must complete the quest, In the Grotto from Seon-Hae, to obtain a Blood Stone. Once you have the Blood Stone, you may pass Koe-Pung and enter the Grotto.