There are few things in nature more spectacular than watching a wall of ancient ice crack, begin to crumble, and then simply surrender to its own demise. Nature filmmaker Richard Sidey recently captured an extraordinary calving event off Ilulissat, Greenland, after heading out alone around 3 a.m. while jet-lagged. Sidey described it as “a magnificent early morning in Ilulissat,” explaining that he began hearing “growling and cracking noises” coming from a massive iceberg offshore. He set up his camera — and then the ice started moving. The footage shows an enormous section peeling away before crashing into the water with tremendous force. The impact sends spray skyward and, more importantly for surfers, displaces enough water to create a surprisingly organized series of waves rolling away from the collapse.…