Agriculture which isn’t working
Farmers are compelled to try and produce food where it cannot be cultivated, including this boulder-filled field, in an effort to feed their starving populace. Perhaps there wouldn’t have been much of a food scarcity if the government had been able to give him farming tools that were more advanced than what the American settlers employed in the middle of the 1700s.
Sadly, this man has to plow this field of pebbles with a hand plow and hope that something would grow.