GEOLOGICAL DISPOSAL

Especially for High Level Waste (HLW) or Spent Fuel (SF), adaptable to non-HLW:
Put it into a deep hole underground and fill up the hole, later seal the underground cavities
2 principal objectives;

1. isolation of waste from people to make incidental or intentional access to the waste highly imprbable
2. isolaiton of waste from groundwater which is the most likely (if not the only possible) vehicle to carry to people

In the long run, achieve these objectives without maintenance or survelience.