Personnel shelter
HKB 3/976 Kvalvik, Western Norway

100`s were built throughout the Atlantikwall. It looks much the same as a R622, but it is a little bit smaller, and have only one room inside.

bunkertypes-r621
(Courtesy of Erik Ettrup)

Specially camouflaged as a warehouse.
bunkertypes-r621-2
(Courtesy of Kurt)