アダム・オンドラさんのインスタグラム写真 - (アダム・オンドラInstagram)「What are those numbers after the name of each route? They are grades and they might be the most discussed topic in climbing. What is the science behind rating the routes and why are they subjective? Enjoy the next episode! Link to new episode in bio. @blackdiamond @montura_official @lasportivagram」8月11日 4時40分