I am fortunate to know the location of tunnels that were built by an ancient civilization in Costa Rica. The entrance has yet to be discovered. I need equipment than can locate tunnels as well as gold figurines that are buried 3 meters deep on two level fields. They are numerous. The road crews that bulldozed nearby went through a bunch of those sites and uncovered massive amounts of gold figurines. They gobbled them up and took off. Most likely to Florida!