The basalt that forms Cape Split crystallized during the Triassic-Jurassic period, over two hundred million years ago, when flowing lava cooled across what would become Nova Scotia's North Mountain range. As the lava solidified, gas bubbles migrated toward the surface and became trapped, creating vesicles that would later fill with minerals. Centuries of wave action have tumbled these mineral-rich fragments onto the beaches below, where rockhounds search for agates, amethysts, and zeolites. The cape is a geological continuation of the North Mountain, a ridge of tholeiitic basalt that runs along the Bay of Fundy shore, but where the mountain ends, Cape Split keeps going, narrowing from several kilometres in width to mere dozens of metres before terminating in a meadow overlooking the open channel.

The hiking trail to Cape Split's tip has drawn walkers for decades. The route covers roughly six and a half kilometres each way through dense forest before emerging onto the grassy headland at the cape's end. The walk takes two to two and a half hours in each direction, and the payoff is one of the most dramatic coastal views in eastern Canada: the Minas Basin stretching east, the main Bay of Fundy to the west, and far below, the tidal currents ripping through the channel with visible force. On clear days, the view extends across to Cumberland County on the opposite shore. The cape was privately owned for years but has been sold to the Government of Nova Scotia and designated a Reserve Park of 427 hectares, formalizing the public access that hikers had long taken for granted.

The beauty at Cape Split comes with genuine danger. The cliffs are actively eroding, and what appears to be a side trail often turns out to be a line of erosion leading to a sheer drop with loose soil and crumbling rock underfoot. A fall from the cliff edge would almost certainly be fatal. Rescue services have been called to the cape multiple times, and there are ongoing discussions about improving warning signage along the most hazardous sections. The erosion is not a flaw in the landscape but the mechanism that creates it: the tides and weather that make Cape Split spectacular are the same forces that are slowly dismantling it. Each winter storm tears away another section of cliff, each tidal cycle undercuts another ledge, and the cape grows a little shorter and a little narrower.

During the American Revolution, the waters off Cape Split saw naval action in the Battle off Cape Split, a skirmish that reflected the broader struggle for control of the Bay of Fundy's strategic coastline. The bay's extraordinary tidal range, averaging about sixteen metres, is not simply a product of the moon's pull. It results from a phenomenon called tidal resonance: the natural rocking motion of water in the bay, known as a seiche, takes approximately thirteen hours to travel from the bay's mouth to its head and back. Because the ocean tide floods in every twelve hours and twenty-five minutes, each new tidal pulse reinforces the one before it, amplifying the range far beyond what the bay's size alone would produce. Cape Split sits at the bottleneck where this amplified tide squeezes through, and the result is a display of raw hydrodynamic power that few places on Earth can match.