These items are an invaluable resource for the future. Over time this trash will become mineralised - future archaeologists and geologists will find rich deposits of tampaxite, dunkindonutite, and the thin plastic-item layer (which correlates so well with the great extinction that the archaeologists will argue it was the plastic bottles themselves that killed the panda). Most valuable of all will be diaperite deposits, a permeable trashic karst rich in a nitrous biogenic mineral oil.

So go put that trash BACK - think of the future!