The Jadinko Lair is a high-level training area in Runescape that was released today in an update. There players can train their slayer, woodcutting, firemaking and fletching skills with all require a minimum level of 83.
Performing tasks within the lair will increase your favour with the jadinkos, who will reward you with fruit imbued with beneficial properties, seeds and juju teleport bags. Finally, fortunate combatants will have the chance to obtain a special vine which can be used to upgrade their abyssal whip.
For more information a full list of what players can expect to find in the lair, check out the official Jadinko Lair guide over on the RS site.