Farmers removing a stump?
Bope. It was FauXi’s latest Covid nonsense (Oh Mi Cron!) blowing up.
Looks like low tide there and beach/sea bottom sandy soils, easily blown-up, but it’d take more than a Cherry Bomb or M80 to make that kind of crater. If it was a old, dead, waterlogged stump, it would have have no real roots left, and a simple tractor could have dug or pulled it out.