Waste Isolation Pilot Plant

The Waste Isolation Pilot Plant, or WIPP, in New Mexico, US, is a deep geological repository licensed to store transuranic radioactive waste for 10,000 years. The storage rooms at the WIPP are 2,150 feet (660 m) underground in a salt formation of the Delaware Basin.

Source: Wikipedia — Waste Isolation Pilot Plant (CC BY-SA 4.0)