The climber known online as the “Spider-Man of Yemen” has died after falling into a volcanic crater during one of the unroped climbs that made him a familiar, and often alarming, figure on social media.

Al-Qa’qa’ bin Antar, also widely reported as Qaqaa Antar al-Absi, was 30. He became known for scaling steep rock faces, cliffs, and volcanic terrain without ropes, harnesses, or other safety equipment. His videos often showed him moving across sheer surfaces with little between him and a very bad outcome, a sign, once again, that the internet has a complicated relationship with risk.

Who was Al-Qa’qa’ bin Antar?

Bin Antar built an online following through climbs that were as stark as they were dangerous. In some clips, he wrote names in white chalk high on rock walls, a personal signature that turned the climbs into public spectacles.