Do you think it is easy to build a stone wall? Think again since you have to fit each stone just right. Since this part of the wall I will be placing two 4 ft granite slabs for a seat on top, it is even more complex. We cemented all of the top stones on the wall and filled in the back of some holes. Then we managed to get half of the seat wall done, this was from 9am to 4pm, and entertaining my daughter! I am hoping to get this done in tow days, then filling in with soil to plant. We're on the home stretch!