 After declaring the caves a World Heritage Site , UNESCO granted $ 100 @,@ 000 to document the site 's history and draw up a site plan . A part of the grant was used for conservation of the caves . Based on assessments by UNESCO , management plans include : better communication and collaboration between the ASI , on @-@ site staff , and other responsible government departments ; improved public information and awareness programs ; monitoring environmental impact of tourists on the cave and island environment ; greater attention to the maintenance of the rocks to address water <unk> into the caves ; and daily monitoring of both structural and chemical conservation measures . 
