Well, this Red Dead Redemption 2 Easter egg is rather ... gross.
If you manage to get to Roanoke Valley in northeast New Hanover, then you will find a house full of burned bodies.
It turns out the house was struck by a meteorite that killed every person inside. You can even see the hole in the roof and the floor.
The piece of meteorite can be picked up as an item. Later, you will be able to sell it, for it's worth.