Is that from high winds? Crazy tall!!

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Is that from high winds? Crazy tall!!

600 meters!
Incredible.
Great view! 600 meters is crazy high!
Looks exhausting.
Is that 600m from bedrock or sea level? Curious how much of that is just sand.
I can't find anywhere that says. My feeling is it's sand all the down to the bedrock because there are some very deep valleys. We drove all over them in a dune buggy and there was no bedrock showing anywhere, just sand.
Our planet really is pretty cool. Shame we're slowly ruining it.
The three tallest dunes in the world are in that general region. #2 is not far at all! Cerro Blanco at 1176m
https://www.muchbetteradventures.com/magazine/tallest-sand-dunes-world/