In some Slovenian caves collector channels gather sinking underground streams and redirect them for potentially long distances parallel to certain faults. The collector channels formed due to ongoing long-term collapse of cave roofs at the points where passages break through the faults, which function as a kind of screen and are termed deflector faults. The fault trends are marked by collapse within the caves, and by active collapse dolines at the surface.
Relationships between deflector faults, collapse dolines and collector channel formation: some examples from Slovenia.
International Journal of Speleology,
Available at: https://digitalcommons.usf.edu/ijs/vol35/iss1/1