Depending on climate and soil type, you will need to dig a 3’wx6’lx3-6d hole. USFS land is great for this. Place nude cadaver in hole and coat with 10-15lbs of lye. Refill hole with excavated soil to approximate level of surrounding area. Disperse excess soil thinly over a wide area. Finally, cover disturbed soil with natural debris from the surrounding area, such as pine needles, leaves, twigs, etc.