how to gently break rock?

[c_scherer123]

My mom refused to let me "torture" a screwdriver or the hacksaw - so I used a hammer and a big nail.
I found 4-5 peanut worms, I thought I only had one in there... Numerous fanworms, some didn't survive the "breakup". I concentrated on the area with the most slime trails and finally found the worm in a tiny corner. It is about an inch long, I was positive it was bigger... Hopefully it was the only worm but I have my doubts...