The dark lines go away when you play with the walls lowered. We needed the walls for the roof. Thanks to MooCow346 for the idea of a cave lot. The lot will fit in any city, although Oasis may need to swap out the trees. It's a giant rock on the outside, but when you lower the roof you can see everything inside. This home was built without using the move_objects cheat, so your sim shouldn't get stuck in odd places. #camping #swimming #pool #starter #homeless #secluded #seclusion