The New Frontier Quest/Spoiler

Mission 01: New Land
Go down some levels, when you are far enough a message will appear: You have found the passage through the mountains and can report about your success.

Mission 02: From Kazordoon With Love
Go to Kazordoon and walk to the Dwarf Mines to the west. Cross the two rivers and find NPC Melfar. He walks on the surface near the mine west of the storehouse and Royal Mailbox. Use your Flask with Beaver Bait on the 3 trees, in any order.
 * Tree 1: You have marked the tree but its former inhabitant has stolen your bait! Get it, before it runs away! ''Kill the Thieving Squirrel.
 * Tree 2: You have marked the tree but it seems someone marked it already! He is not happy with your actions and he brought friends! (1 war wolf en 4 wolfs will spawn.)
 * Tree 3: You have marked the tree but also angered the squirrel family who lived on it! (4 Enraged Squirrels will spawn).