Something tells me the OP would have a more difficult time rounding up 18 people equipped with hundreds of feet of rope than calling a local to come dig it out in 2 hours.
That's the way to do it. Get down in there, carve that rock into an Easter Island statue, dig the ground out flat to daylight, get a couple dozen people and move that rock!
We have big equipment now. They still argue how the Egyptians did it. But it was a lot of manpower and moving flat faces on rollers and sand. Just need to hire someone with a bigger track-hoe.