He's shocked when he finds what's on the bottom.
Local people are being threatened

Another challenge is the local people who tend to be very protective of their land. They pose a threat to strangers who enter their land. The locals revere the snakes, and they prefer that the pits remain untouched. To them, the pits are sacred. The locals even threaten companies that arrive there but since Kevin's was hired by the actual government, they had to get the job done.