As of today, I also want to enrich Steemit with some pictures. Since I am not traveling much, I will not withhold these from you 😊

Submarine bunker "Valentine"

Construction time 1943-1945 (completed at 95%)

Location: Germany- Bremen-Rekum

Dimensions:

-Ground area: 35,375 m²
Length: 419 m
Width (east): 67 m
Width (west): 97 m
External height. 20-22 m
Inner height: 18 m
Concrete thickness: 7 m

Short Story

Due to the increasing bombing of German yards, submarine production was to be relocated to bom- safe shipyards in bunkers.
In this bunker submarines of the type XXI should be produced as on the assembly line and in section construction. Every 56 hours, a submarine should be made, so 14 in a month.
It was built by 10,000-12,000 forced laborers from the occupied areas and the "Neuengamme" concentration camp.
The construction was completed by air raids that were carried out on 9 February 1945 and on 27 March 1945 by 18 specially equipped bombers of the type Lancester B Mk.I (Special). Among other things, these threw 13 "Grand Slams" (10 t bombs) on the bunker, 2 of them penetrated the roof and tore 8 m craters into the bunker ceiling.