Geological hazards of the Gerecse Hills (Hungary)

Landslides and related mass movement processes actively pose a threat in the Gerecse Hills (Hungary, Transdanubian Range) by endangering residential and agricultural areas. Several closed or abandoned mining sites and waste deposits are also located in the area. Most of these sites have not been fully remediated, which makes their surroundings dangerous and unsuitable for other use. A multi-hazard map (1: 60,000) was prepared about the geological hazard sources of the Gerecse by collecting and synthetizing data from individual thematic maps and databases. The aim of the map is to provide a comprehensive look at the different but often-interrelated hazard sources of the area. The thematic content of the map consists of three main parts: the result of a statistical landslide susceptibility analysis marking the most landslide-prone slopes, the documented slope failure events, and the areas of hazardous mining sites and their waste deposits.Excerpt from the main geological hazard map showing the loess valleys between Neszmély and Dunaszentmiklós. Several landslides and falls happened in this area according to the map. Many of the slopes here are marked susceptible to landslides. There are quarries and waste heaps in the northwestern parts around the Vörös-kő hill. A red mud reservoir is in the northeastern part of the excerpt's area.