A man wanted to celebrate his 91st birthday in high style. Very high.

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Dr. Bill Weber, of Florida, is now the oldest known person to have climbed the summit of Devils Tower in Wyoming, the Casper Star-Tribune reported. Rob Kelman, 87, held the previous title, CBS4 reported.

The journey to the summit of Devils Tower took Weber 16 hours, the Casper Star-Tribune reported. Weber's two sons joined him on the epic adventure.

Weber was a veterinarian for 30 years before retiring and taking up a successful hobby in wildlife photography, the Casper Star-Tribune reported.

Weber said the climb was tougher than he expected. At points, he wondered if he would make it and thought, "If I croak while I'm doing this, at least I'll die doing something I wanted to do, and I've had a good and long run," Weber told the Casper Star-Tribune.