1.1 Geology and Sampling
The Za Hájovnou Cave (49° 40´ N, 16° 55´E) is a former sinkhole located in Javoricko Karst, Moravia Region of the Czech Republic (Lundberg et al., 2014; Musil, 2014) (Figure 1). The Javoricko Karst is formed by light-grey-coloured massive Devonian limestone that overlies Pre-Cambrian phyllite (Lundberg et al., 2014; Musil, 2014). Spranek and Javoricka are two rivers that flow through the Jarovicko karst. While Za Hájovnou Cave is situated on the north-western bank of the Javoříčka river on the southern slope of a Pani Hora hill (Lundberg et al., 2014; Musil, 2014; Zak et al., 2018;), both Spranek and Javoricka watershed may have contributed to the sediment development in this cave (Figure 1).
The Za Hajovnou cave is approximately 500 m long system (Babek et al., 2015; Musil, 2005). The cave’s corridors were expored previously in a total length of ~200 m (Musil, 2014) (Figure 2). The cave currently consists of two main parallel corridors with slightly different sedimentological record (Musil et al., 2014); the first corridor (local name is “Excavated Corridor”) used to be sinkhole entrance) and the other corridor (local name is “Birthday Corridor”) has separate entrance and is connected with the Excavated Corridor by the Connecting Passage Corridor (Figure 2). Sediments from the Excavated Corridor continue to Birthday Corridor and partially filled the Connecting Passage Corridor (Musil et al., 2014) (Figure 2).