In 1850, Dr. Edward Cullen, an Irish physician and member of the Royal Geographical Society, had announced the discovery of a way across Darien by which he had walked from the Atlantic to the Pacific several times and quite effortlessly. He had been careful to mark the trail, Cullen said, and at no place had he found the elevation more than 150 feet above sea level. It was the miracle route everyone had been searching for and the story caused a sensation.

