I know you're not American Andrew it's why I'm doing my best not to sound condescending.
I'm here because my brain decided it wanted to start dying, I'm disabled. So I spend my time here discussing something simple I enjoy, MMA.
If you wanna take an interest and kill time reading or learning, that's awesome. There's years worth of information about volcanos to read, watch, interpret. This is the opposite of that.
This is someone starting with a conclusion(rocks=fossilized tree stumps) and ignoring any and all information that doesn't adhere to that conclusion. It's intellectually dishonest and essentially a lie or fairytale, depending on how you wanna frame it.
Also the hexagon is common in nature Andrew. You could even say very common. Google "hexagons in nature" and see what comes up.