N. Kósa Judit - Szablyár Péter: Underground Pest - Our Budapest (Budapest, 2002)

Bibliography

The belt of hills on the left-hand-side of the Danube suggests, with its steep rock formations and ravines, a varied underground world. The natural cavities formed in the rock by millions of years have been extended and adapted to human needs by the inhabitants of the city. The network of natural and artificial cavities, the beds of dried-up streams locked in the embrace of stone vaults, the ducts and the "balloons" of giant subsurface reservoirs all make a lasting impression.