Alright, so it won't let me paste it on here an way because it gives me errors. So, direction time.
1. Once you enter the wasteland head to the first house with all of the stairs in it.
2. Once you exit the house, take the right slide.
3. Then, head straight up where the poles are and go through the small house.
4. enter the cave hole and move the boulder by using strength.
5. enjoy your ghastly!