Panoramic view of the Dounraey Nuclear test site. The orange coloured building on the left is the Shore Test facility (STF) of the Vulcan Reactor Test Establishment of the Roytal Navy. The large white building to the right is the Prototype Fast Reactor and the classic Dome in the centre is the Dounraey Fast Reactor. The two fast reactors are now decomissioned but the STF is still in use and has the Royal Navy Core H Submarine Reactor under test.