Just like anybody else with a site to explore, we have waited for the end of the rainy season which,usually runs from the mnoth of May until the end of January the following year. It varies from region to region.
For TH operations, rainy seasons mean more headache for the water trap since there will be more water to handle, and more dangerous due to a higher chance of bar down and collapse of the tunnels, digs, caves, etc. This affects everyone including the highly-financed operation.
On our site, we were expecting a good battle with the dewatering of our dig since we had experienced the same scenario last year when we started operating our site.
But to our surprise and amazement, the usual five hours daily dewatering had been reduced to two hours only. And bigger is our surprise since when water was cleared on the bottom of our dig, two obvious holes have emerged.
There was a tunnel revealed on the eastern side of the dig and an air vent on the western side of the wall.
Both holes are approximately located opposite each other at 36 ft below the surface. At the bottom of the tunnel, is sign of waterpaths. Although the bottom of the tunnel lied below the surface of the water inside the dig during rainy days but surely it lies now above the water level before our dewatering as shown on the water marks on our retaining bamboo fence at the bottom of the dig.
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