NEW YORK — Taking the hours-long journey to what is believed to be the deepest point mankind has visited in any ocean was a complicated one, and for Victor Vescovo, it meant being constantly on the alert as he monitored his state-of-the-art vessel.

Alex Honnold has been having a bit of a moment.

The legendary rock climber made history in July of 2017 when he became the first to ever free solo climb – that is, climb without ropes or other aid – El Capitan, a notorious 3,000-foot cliff located in the Yosemite Valley in California.

Honnold’s historic ascent – years in the making – was the subject of “Free Solo,” a documentary by Elizabeth Chai Vasarhelyi and Jimmy Chin that just won the Oscar for Best Documentary at the Academy Awards.

But film is just one medium through which the story of Honnold’s climb can be told.

Mark Synnott’s “The Impossible Climb: Alex Honnold, El Capitan, and the Climbing Life” (Dutton, $28) is a longform literary exploration of Honnold’s feat. It lends texture and context to the climb, connecting it to the history of climbing in general and climbing in Yosemite specifically. By checking in with the sport’s forebears – among whom Synnott can include himself – the book allows for a depth of understanding in how climbing has evolved, as well as how that evolution has resulted in an athlete such as Alex Honnold.