Complex sentence: A pit is excavated on a dry hillside and the bottom, laid with a floor of poles, covered with bark and several deerskins, and on this deposited the corpse, covering it with bark, before throwing in the earth.
Split into simpler sentences: A pit is excavated on a dry hillside and the bottom, laid with a floor of poles, covered with bark and several deer skins. On this was deposited the corpse, who is then covered with bark, before throwing in the earth.