1.1 Geology of the Cave
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) (Fig. 1). The Javoricko Karst is formed by
light-grey-colored 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; Žák et al.,
2018), both Spranek and Javoricka watershed may have contributed to the
sediment development in this cave (Fig. 1).
The Za Hajovnou cave is approximately 500 m long system (Musil, 2005;
Bábek et al., 2015). The cave’s corridors were explored previously in a
total length of ~200 m (Musil, 2014) (Fig. 2). The cave
currently consists of two main parallel corridors with a slightly
different sedimentological record (Musil et al., 2014); the first
corridor (local name is “Excavated Corridor” which is used to be
sinkhole entrance) and the other corridor (local name is “Birthday
Corridor”) has a separate entrance. These two corridors are connected
by the Connecting Passage Corridor (Fig. 2). Sediments from the
Excavated Corridor continue to Birthday Corridor and partially filled
the Connecting Passage Corridor (Musil et al., 2014) (Fig. 2).