How do I get there from Canifis? I am wroking on slayer and need to kill shades. THanks

Make sure you have at least started nature Spirit quest first.

 

The long way: From the canifis mushroom patch, head south towards the gate to mort myre swamp, run all the way south until you come to a bridge that goes south which leads you to a environment different from that of the swamp, follow the path and eventually you'll end up in mor'ton.

 

 

 

The shortway: You need to complete "in search of myreque" quest first. From Canifis pub, head behind the build to the trapdoor, into the passageway, go all the way to the boat (you have been through this route during the quest). Once the boat arrives at the destination, you are in mor'ton.

 

 

 

When you see ruined buildings, afflicted and green circular creatures (shades) roaming around you, you know you are in mor'ton.