there are a number of tour companies that lead spelunking trips to this and other cavess - an option certainly worth considering. 

in the uppermost regions of the cave, visitors will see a fissure, allowing for the constant circulation of air - and the same crack allows sunlight in and gives the cave a stunning glimmer. this is  creates an unique atmosphere, almost magically revealing a variety of local flora and fauna for a short time.

to catch the best light, it helps to go in the summertime around the early afternoon, as the sun shines its brightest rays at this time and gives the cave an especially bright color.