jwebs
Elite Member
So, I went out to a local park that has been around for quite some time now(since the late 1800s), and I wandered into an area where I found these "rocks". Each one rang up as 80+ on the F2, ranged in depth from 2" to 6", and were all contained in about a 300 sq. ft. area. They are very light for their size to be metallic in nature. They are NONmagnetic! The picture in which im holding one and you can see a small amount of the interior is where I tried to cut the rock with a small handheld grinder type device that I got from harbor freight....any ideas on what this might be?? I have about 4 more, ranging in size from about the size of a quarter, to about 3"x3"x2".