In Redhill you will get a quest from Ronick after you did the prequest in Kingdom of Kalon (needs some cape to get in there). But, you will find out you only see a portal to Ronick and no way to get there, neither jumping over things.
How do I get there then?
Go to Panilor (68.2 , 71.1), talk to him and he will transport you to Ronick (55.5 / 69.9).
For this quest you need to kill 3 yellow npc's.
69.7/61.5 Defending Prisoner
(this npc you cannot attack. You see 4 torches. Click on them in the order: in front right, in back left, in front left, in front left. Eventually they are all not lit and the torches disappear. Now you can kill the mob. Kill it.
61.6/75.9 Disappearing Prisoner
(inside the cave, its invisible and if you are near he will become visible, simply kill)
ca. 67.0/71.3 Double Prisoner
(you can't reach this mob, so go to Kunin 60.4/70,2. Talk to him and get 3 boxes. Go to Panilor and go via him towards the mob, you will see 1 big box and two small ones. Jump on a small one and click on a box in backpack, jump, another box from backpack, jump, jump on big box and then on the wall and kill the mob).