The valley of the Benta Brook provides some of the most memorable landscape in the Érd district. It arose as a tectonic fault at the beginning of the Pleistocene, and later deepened and widened by streams flowing into the Danube. The harder layers of Sarmatian and Leitha limestone form interesting crags on both sides of the valley on the edge of Sóskút, where several natural alcoves and caves can be found on Kálvária Hill. The hive stones and hive holes in the district were first reported by Árpád Halász, followed by Péter Mihály. The former also produced in 1939 the first description and map of the 63 m long Zelezna Baba Cave, delivering pottery fragments and bone remains he found there to the Hungarian National Museum.
 
The Sarmatian limestone from Sóskút Quarry has been used for building for centuries. An interesting description of this quarry for limestone from the Miocene period was provided at the end of the last century by Lajos Lóczy. The stone’s physical characteristics (compressive strength, water retention, porosity, frost resistance) are very variable. Due to its porous structure, it has good heat-insulating properties. It was used for numerous public buildings in Budapest, including the Academy of Sciences, the Technical University, the Royal Palace of Buda Castle, the Citadel, the lions at the ends of Chain Bridge and the sculptural decoration on Parliament, for the former Wimpffen Court (now the Hungarian Geographical Museum) in Érd and several dwelling houses in the district, and for the plinths of the statues in the museum garden in Érd. Sóskút limestone was commonly chosen to line wells. In the churchyard of Ófalu RC Church in Érd are two porous filtering stones once used by mariners to clean water from the Danube.