Danish version 

The Author  
Map and Overview
Fortification overview

Defence of Copenhagen
The Persons behind
The  Mobilisation 1914
Attack against Denmark

The Northern Defence Line
The Forts
The Batteries
The Flooding
The Positions

The Naval and Coastal Forts
The 1. Defence Line
The 2. Defence Line
The 3. Defence Line

The Western Defence Line
The Principles
 The Profile
The Caponiere
The Batteries
The Storing Facilities

The Tune Position
Modern Warfare
The Aerial War
The Position
The Mosede Fort
The Foxholes
The Galleries
The Trenches     
The Artillery
The Air Defence    
The Camps and Barracks
Other Facilities
After WW I
The Present Remains



The Fortifications of Copenhagen

The flanking foxholes of the  Tune Position

There were built a total of 29 individual foxholes, 3 single caves with observation platforms and 7 double caves. Each cave was equipped with a 40 cm. carbon floodlight  and two recoil guns.
                 The Skel foxholethe only intact doublecave.
The Vendals foxhole, North of Karlsstrup.             Single foxhole.
The purpose of the caves was to provide flanking fire on the barbed wire closures, so hostile infantry was shot at from the side while they forced the barbed wire entanglements.
Completely in the spirit of experiences and the huge huge losses this tactic had caused at the trenches on the battlefields of Europe.

The double caves were equipped with 4 recoil guns and 2 floodlights. They were angled, and had two flanking tasks.
The Caves were gradually replaced by so-called galleries, presumably because the large hole for the floodlight was too great a risk for caves.

The caves consisted of 12-15 cm reinforced concrete in the walls and 20-25 cm in the ceiling. Rocks were placed under 0.5-1 m earth for early detonation.

Flanking Caves.
29 pcs. single caves with 1 upper operational room with 2 recoil guns and a floodlight.  
                                1 room beneath, with exit to at little trench.

3 pcs. single caves with an observation stand.
The Grusgrav South Cave
Højgaard West Cave
Snoldelevvej Cave 

Where he fields of barbed wire are angled, double caves were built.
There were 7 double caves with one operational upper room with 4 recoil guns and 2 flodlights.
The 7 double caves are situated in the Karlslunde (5) and Tune(2) area.

 The 7 caves in the Roskilde area was numbered F1 – F7 (i parantes) but later got local names.


The caves, from the north to the south:

The Veddelev Mølle Cave  (F7)
The Himmelev Cave (F6)
The Provstekilde Cave (F5)
The Lidt-Godt-Huse Cave (F4)
The LIllevang Cave (F3)
The Vindinge Dampmølle Cave (F2)
The Vindinge West Cave (F1)
The Vindinge Double Cave
The Mindstrup South Cave
The Herredsfoged North Dobbelt Cave
The Grusgrav North Cave
The Grusgrav South Cave
The Højgård West Cave
The Snoldelevvej Cave
The Baldershøj West Cave
The Baldershøj East Cave
The Penstrupdal West Cave
The Penstrupdal South Cave
The Højlund North Cave
The Højlund East Cave
The Sorte Cave I
The Højmarks Cave
The Skel Cave (double)
Hastrup Cave
The Vendals Cave
The Karlslunde Cave
The Justitsråd Cave (Named after justitsråd Henrik Damkier; dead 1908)
The Bæk Cave
The Himmelbjerg East Cave
The Himmelbjerg South Cave
The Klinte Cave
The Strand Cave (ekstraforstærket med 40 cm væg mod havet)
The Kilde Cave
The Corporals Cave