Ben Nevis the summit only to find "fragments of earthen and glass ware, chicken bones, corks, and bits of paper". It was not until 1847 that Ben Nevis was confirmed by the Ordnance Survey as the highest mountain in Britain and Ireland, ahead of its rival Ben Macdhui. The summit observatory was built in the summer of 1883, and would remain in operation for 21 years. The first path to the summit was built at the same time as the observatory and was designed to allow ponies to carry up supplies, with a maximum gradient of one in five. The opening of
Ben Nevis than navigational error), the long tradition of placing such aids on the summit, and the potentially life-saving role they could play. A series of solidly-constructed cairns currently (September 2009) marks the upper reaches of the Pony Track. The north face of Ben Nevis is riven with buttresses, ridges, towers and pinnacles, and contains many classic scrambles and rock climbs. It is of major importance for British winter climbing, with many of its routes holding snow often until late April. It was one of the first places in Scotland to receive the attention of serious mountaineers, with an ascent of Tower