30-40 feet
Looks like about a telephone pole's worth of height. Given the averaoe pole is between 30 to 40 feet, my estimate is the same.
At least 30 40 feet
It depends on whether it's high or low tide. Whatever it is, it's not safe to jump off of it, if that's why you're asking.
I'd estimate 20-25m.
It seems close to about two stories, or 20', but it may be a bit less.
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