Matthew Shifrin is a blind rock climber from Boston who took up the sport almost a year ago thanks to his friend Max Hernandez.
Max acts as Matthew’s caller – giving directions and guiding him to where holds are on the climbing route.
As Matthew became more advanced at it, he wanted a way to plan and strategise his climbs.
So he devised a system of mapping out his routes using his beloved childhood toy – Lego.
Video by Alexandra Ostasiewicz