Installation?

Only a few years ago there was an entrance to a huge underground ammunition dump. Several such installations were dug into the slopes of the Torsburgen plateau. 1850 cubic meters of soil and rocks were removed from the cave during construction of this dump, and the cost of the work was 117 000 SEC. In 2006, the Swedish military cleaned warehouse and sealed the entrances till better times. Now we need an excavator for exploration...