The shelters under Kraví hora belong to the military objects from World War II that were not completed. Their construction began in 1944 and according to the surviving documentation a large number of such facilities were to be built in the Kraví hora peak. However, only two facilities have been discovered and identified to date, only one of which is open to the public after modifications.
In the second half of 1944, an intensive construction of air-raid shelters was started in the vicinity of Úvoz and Grohova Street on the slope of Kraví Hora, intended mainly for the German inhabitants living in this locality. At that time, the German troops had military material and probably ammunition stores located on Kraví hora. The danger of air raids was therefore more than likely in this part of Brno. Several air-raid shelters in a convenient position on the slopes of Kraví hora were built by the German specialised air defence units Luftschutz and Technische Nothilfe. These units were mostly staffed by Czech specialists and mainly students in the form of forced labour in labour camps. Their task was to build a system of rectangular passages in the rock massif with several entrances and emergency exits with good ventilation and a system of sanitary facilities.
The construction of the shelter at the mouth of today's Jana Uhra Street into Úvoz Street was probably the most advanced, where approximately 350 m of corridors with three entrances were built. These were 2.5 x 3 m tunnels cut only in the rock with temporary wooden reinforcement. After the end of the Second World War, it was decided to complete the shelter. In the early 1950s, after the removal of the wooden formwork, work began on lining the passages with concrete blocks. However, the work was abruptly stopped. What reasons prompted the civil defence command of the time to stop the work is no longer known.