stuck with the quest...
 

Quest "A new home for Lizardmen", after talking with Archmage Rezo, he told me to "find out what happened in Marshan Swamps", How to do that???

Go to cave of mystery, Ice Gardens Island - on the upper left corner there is portal opened

Good Luck i got stucked with rezo quest to go in the mines after that...

Where is "cave of mysteries"? In upper left corner there is only pirate's lair (u can access it only with ship), or am I missing something?

Found it..its in Ice Gardens, not in Merlassar...