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New Speleohydrogeological Research of Crveno jezero (Red Lake) near Imotski in Dinaric Karst Area (Croatia, Europe): International speleodiving expedition "Crveno jezero 98"

The new speleohydrogeological research recently conducted in Crveno jezero (Red Lake) provided valuable information about the depth, volume and morphology of this karst phenomenon. This is a much larger speleological system than could have been gathered from previous research, and the volume of the submerged portion of the system amounts to approximately 16 million cubic meters of water. The total difference in height between the highest and the presently known lowest point amounts to 528 meters, and is located at 6 meters below sea level. The lowermost depth of lake water as registered during the research (Autumn, 1998) was 281 meters. Several hundreds meters of speleological structures (caves) within the lake were also investigated. An overview of the Crveno jezero speleogenesis is presented, as it is in fact a speleological feature (pit).

speleology; Croatia; Red lake; speleodiving; karst

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