Or a really big flood.
Yep. Or perchance a REALLY big wave.
Amen
Could be a really big flood. Really big floods occur around the world with regularity, and Hidalgo is certainly a place where hurricanes (and ensuing really big floods) have caused significant damage and deaths in the past. Of course we know this isn’t evidence of Noah’s flood; since he gathered two of every animal, we’d still have mammoths, mastodons, and armadillos the size of cars still wandering around.
Question then becomes 'what could cause the top to tip so?' Would a passing massive body generate sufficient gravitational disturbance? nad might there have been accompanying 'electrical discharge exchanges' when this body passed close enough to the Earth in rushing through the solar system, and might there be other clues on other planets, like a huge gouge across the surface of perhaps Mars and perhaps the demiose of an entire watery planet in the Martian orbit with Mars a surviving moon of the other water world? ... Oh my, when we need Tom Van Flandern ...