In the distance I could see a white shape hanging down from the roof. As I crawled toward it the obstruction materialized from the gloom as a hanging boulder – not big enough to crush a house but big enough to cause some serious damage to a caver if it fell. I considered slipping under it but also knew that to do so might cause it to drop. I looked up and saw that trying to work it free might bring a few other boulders trapped behind it down as well.
I can think of only one solution here, “Greg and his microblaster”. I remember the beastly crawl into “XS Wire Cave”. D, Greg and I had visited in mid January. Greg had slithered into the tiny water filled tube, his portable drill ahead, the tooth by which he bored a hole in the underwater hump that was obstructing our continuance. In comparison this should be “a cake walk”. He can do his subterranean dentistry, not by filling a cavity but rather “removing the tooth”.
I took this picture underneath the hanging boulder, the tunnel goes on, straight and somewhat unobstructed. The groove in the roof indicates that the passage follows a joint (horizontal weakness in the rock) and its rounded shape suggests that it is pheratic in nature (formed beneath the water table). As I had said, the water flows down here at times and so there has obviously been a change in the area’s water flow. The debris seems quite significant, it increases as you go deeper in. I notice that most other tunnels in the area are more trench-like than this.