Forgive me for the poor screens but this is my first exploration thread.
Blinking and the growth/dc glitch work well here, i'll be using blink.
First you want to head to the Grosh'gok Compound and head into the cave.
Once in the cave head up the ledge and wedge yourself between the wooden post and top of the cave.
If you are using blink move forward while using blink to get through, if using the growth glitch i'm sure its pretty simple to figure out.
After you're through the wall turn to your left and you will see a hole. Approach the hole on your flying mount and start flying down, otherwise you'll go through the wall back into the cave.
Fly down a good amount so you don't end up above ground and start heading to Morgan's Plot. Stay a bit to the left while flying.
Try to get as close to the closed off gate as you can from underground, I circled the area best to come up at.
If there's already a thread about this feel free to remove mine.
The Crypt is huge and the doors all work, if you haven't seen it yet I recommend doing so.