This route is "pretty scary," Hill says, because after climbing a pitch rated 5.14 (most difficult), you have to climb another 40 feet without any protection.

Calum Muskett, who ascended last summer, called that section "terrifying."

And there are multiple 5.14 pitches. Although she hasn't climbed it herself, Hill says the hard parts are higher on the route. Imagine kicking into a higher gear after a long distance of climbing:

"Perhaps it's like doing a 5-minute at mile 20 of a marathon," she said.