Credit: SWNS / Dani Arnold<br /><br />A climber made a nail-biting 2,019m ascent on a limestone ridge - no <br />wider than his shoulders. <br /><br />Alpinist Dani Arnold, 39, braved the razor-thin ridge with sheer long drops on each side.<br /><br />An amazing video shows the climber scrambling up the "rare" rock formation on Kreuzberg mountain in eastern Switzerland. <br /><br />Dani encountered the formation two hours into a six-hour climb., which he carried out with fellow climber, Michi, 55.
