Locals call them rods, other people identify them as Flying Snakes or others could see them as ETs or rare creatures. For me, I can't make any conclusion about these strange objects until I could see them in person. But with the slideshow posted here, they are insect-like very rare flying creatures (if indeed they fly). If not visible with the naked eye, I presume they vibrate at a very high level or frequency that digital camera or with faster shutter could capture them. Other dimension entities such as elementals or nature spirits, and even ETs can be captured by cameras with higher megapixels unless those entities could also exert their energy to make themselves visible or manifest into the physical world. Now, the most logical description about these could be just objects fell in the area from the upper part of the cave. If they are rare creatures then scientists should do some research about their species. Anybody could make some analysis about these objects or creatures? Kindly post them here.
More about the story: http://misteryolohika2005.blogspot.com/2008/04/strange-flying-creatures-in-agta-cave.html