Rubuta ci gaba don wannan sakin layi - A cikin shekaru masu zuwa, masu hawan dutse sun faɗaɗa gefen kogon kuma sun gano sabbin rassa, wanda ya haifar da jimlar fadada zuwa. A cikin 1973, an sanya wasu gilashin gilashi a cikin takamaiman wurare a cikin kogon, don tabbatar da ƙarfin sararin samaniya. A slabs tsayayya wa 1976 Friuli girgizar kasa
, nuna Karst yankin da aka kauce wa girgizar kasa. Daga baya, masana ilimin ƙasa da masana ilimin halittu sun sami karatu da bincike kan yanayin yanayin kogon da nau'ikan dabbobi da ke rayuwa a cikin ramin.