By skyforbes 
There used to be a very ugly slate patio where this boulder is now exposed. I removed the patio and uncovered this massive boulder slightly raised against the yard. I wanted to see if I could “trim” the rock down a bit to grow grass over it, so I drilled the holes you see and used dexpan to little effect. I’m also now reading even if I could trim down a bit there would still be problems with growing grass. Ideally I’d like this to be a grassy area even if it has to be a slight mound, what are my options/ideas? Jackhammer? I’m not putting the patio back.