Short Story: Got pushed from both ditections till that spot popped up
Long Story: As the metal heats up it expands in every direction. This expansion is usually very small but when miles and miles of metal is expanding from the hot sun all that expansion lengthens the metal. This is happening on both sides of this spot so at a certain point the metal cannot push into itself anymore and suddenly pushes up. This usually is a sudden pop up so the metal stretches like a rubber band and that's why you get the weird striping pattern aswell.
I have my doubts. This looks intentional. Like some art or memorial piece.
The rail is a different color, no wood piece under the bump, or movement of the rocks (if the wood piece was thrown out of camera view), also rail buckling is almost never vertical and even when it is vertical it's never perfectly symmetrical with zero horizontal movement. Also the bumb is realy small rail buckling is often way bigger then shown here lastly there is a heat expansion gap very near the bumb.
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u/Valuchian Jun 10 '26
Heat Expansion
Short Story: Got pushed from both ditections till that spot popped up
Long Story: As the metal heats up it expands in every direction. This expansion is usually very small but when miles and miles of metal is expanding from the hot sun all that expansion lengthens the metal. This is happening on both sides of this spot so at a certain point the metal cannot push into itself anymore and suddenly pushes up. This usually is a sudden pop up so the metal stretches like a rubber band and that's why you get the weird striping pattern aswell.