how to get to the ley line hub
Go to the Prosperity Waypoint. Go to the closest fire crystal crossing and zip across the quicksand. Look to your left (the well is just ahead to your right). There is a door. Go through that door and into the tunnel at the back. Down below in the tunnel there is a T intersection, go in there and up the curving ramp/rocky cliff thing. You will emerge in the next section of Dry Top.
Proceed through the Oasis to the far end and up the hill to the left to a pair of vine bridges. Take the left hand bridge (jump along it rather than running, or you may slide off to your death). You’ll be at another waypoint, which for future reference is the closest to the ley line hub.
Go past that waypoint into a desert area. Go along the right hand wall until you descend into a ravine. At the end of that, you’ll be in the hub, and off to your right up a hill will be the LS stuff.
There will be a lot of mobs and possible sandstorm things along the way, but that’s the route.
If for some reason that door to your left won’t let you through, you may need to do a previous episode to open it, but I think that is not the case. If the door is closed, try just walking through it.