Rocks as such are part of the new landscape gurus.
I seen a crane down the street lifting a rock probably 2 tons or more into a back yard to sit near the pool.
They are charging people here like .13 cents a pound for these rocks.
My wife bought one last week that had some moss on it (which cost more) to place in her gardening area. It weighed 300 lbs. and it was a job in itself to move.
The folks at the rock biz told her to pour buttermilk on it to keep the fungus type moss growing on it.
Maybe one day, old laundry washers or refrigerators sitting in the front yard will come back and be the latest craze.
Rick