I am currently level 14, and i've heard that Kraag Tombs is a good way to level up, but when I go to the entrance it just says some weird stuff and the only option for me is to leave, i tried from I-IV same thing.
Is it because of my level?
Is it some quest I didn't do?
If it is because of my level, where's the best place to level until I reach the required level for KT?

Thanks in advance!