But first we take a look at the ground beneath your feet its not always as solid as you might think some areas are full of Hidden Underground cabotage so over time the earth can suddenly collapse creating a sinkhole often without warning. Sinkholes have grown common in the area around the dead sea there are thousands of them there. A new system could now predict where the next to set to appear. The holes are up to forty meters wide and often thirty meters deep. There are over six thousand of them. Were at the dead sea the famed body of salt water that lies between israel and jordan over four hundred meters below sea level. An increasing stretch of the israeli side of the sea is now cordoned off due to the proliferation of dangerous sinkholes. Just four years ago mineral beach was a popular resort that attracted over two hundred thousand guests a year and. Melvin blau used to manage the resort and was here the day the ground simply gave way. Beyond bicycling wish it was a bright sunny d