After reviewing some information about the environment around the land owned by my family last week, I decided to have a mandala garden described in Bill Molison's book. With a hoe and a shovel , I have finished a circle garden and the sunken path and measured the position of 6 keyhole path. Hope I can get the whole mandala done next week and start to mulch and to plant.
Use four points at four corners to get the center of the land.