Non-karstic Caves of the Gerecse Mountains
The Gerecse Mountains form an 800km2 area in the Trans-DanubienMountains between the River Danube, Által Creek and Kenyérmezõi Creek. The area is heavily criss-crossed by tectonic features. Its higherreaches comprise of ranges of faulted dolomite and limstone. Tectonicallyformed valleys and basins lie among the ranges. Along the fault lines significant masses of calc-tufa has been deposited from former springs.
More than 65% of the region is covered by loess which can reacha thickness of 25 m near the Danube River.
In the Gerecse Mountains there are several hundred karst caves,but only six caves of non-karstic origin are known. The Angyal-forrás Cave at Tata was formed by weathering and corrasion in carbonateous sandstone and conglomerate. The 80 m long Büdös-lyuk has formed in Eocene sandstone near the village of Bajót.. The Calc-tufa Cave at Eötvös High-School in Tata, The Feszty Cave and the K õ-hegyi Calc-tufa Cave in Mogyorósbánya were formed by syngenetic cave development during tufa deposition and by the weathering of the calc-tufa.
The Neszmély Loess Cave hasbeen formed in the loessial cover of Mount Pap as result of weathering and rock fragmentation.
The total length of the six non-karstic caves is about 215 m. The length of the Calc-tufa Cave at Eötvös High-School is uncertain, because the cave has been filled in.