Sonderwaffenlager Großenhain, Military bunker complex at Grossenhain airfield, Germany.

Sonderwaffenlager Großenhain is a bunker complex on the Großenhain airfield, built as the Granit 1 variant. Its two bunkers were assembled from circular precast concrete sections into tube shapes, with the floor poured in concrete and sealed by a steel pressure door. Each bunker has its own engine room, and a loading ramp links the two.

The bunker system was built between 1972 and 1974 by Soviet forces. Construction materials were transported at night from Poland to construct the facility.

Since 2000 the site has been cared for by a military-history enthusiast who restored the bunkers to near-original condition; they were listed as a monument in 2004. Bunker 1 now holds an exhibition on the history of Großenhain airfield from 1913 to the present, while Bunker 2 houses a radio station of the DARC local branch Großenhain (S18), including a remote station used by members for contacts worldwide.

Bunker 1 houses the exhibition on the airfield's history from 1913 to the present; bunker 2 is a radio station of the DARC local branch Großenhain (S18), with a remote station usable by DARC members. The site is a listed monument since 2004. Access is via the former airfield grounds.

The structure features circular prefabricated concrete sections that form tunnel shapes and was surrounded by triple fences. Specialized KGB guard units protected the facility to safeguard its strategic importance.