I visited Vesuvius a couple years ago, walked the trail right to the summit, looked down into the smoking crater; could have had a fine selfie if it had occurred to me. No idea what this fool was trying to do, but like so many selfie-idiots, he had no idea either. BTW, no way it cost 2500$ for a ticket. 2500 Italian lira, maybe.
Italy uses the Euro, the Lira went away a long time ago.
Entry fee was cheap when we hiked Vesuvius when I was a young’un, long long ago. I just looked it up: entry fee to the National Park is 10€.
The $2500 must be for a package tour or something.