From In the Kingdom of Ice: The Grand and Terrible Polar Voyage of the USS Jeannette, by Hampton Sides (Knopf Doubleday, 2014), Kindle pp. 81-82:
Most assuredly, it was time for an entirely new route. Petermann had read Silas Bent’s treatises on the Kuro Siwo and was familiar with his ideas about a “thermometric gateway.” Petermann agreed with Bent. The place to strike for the pole was the Bering Strait, just as De Long had been thinking. Not only had the route never been tried before, but the Kuro Siwo was likely to be a warm-water current powerful enough to soften up a pathway through the ice that would lead to the Open Polar Sea.
But there was another compelling reason for going by way of the Bering Strait, Petermann suggested. Lying off the coast of northeastern Siberia, not far from the Bering Strait, was a mysterious landmass marked on some maps as Wrangel Land. For centuries, it had existed as little more than a rumor, a mirage, a fog-gauzed dream. People weren’t sure what it was. Perhaps it was an island, perhaps a continent, perhaps a magical portal to the pole. Perhaps it didn’t exist at all. Before it came to be called Wrangel Land, it had gone by a succession of other names scrawled on whaling charts: Tikegan Land, Plover Island, Kellett Land.
In 1822, Chukchi natives on the northeast Siberian coast told the Russian-financed explorer Ferdinand von Wrangel about a land to the north that could sometimes be seen when atmospheric conditions were just right. The Chukchis had never been there, but once every few years, on sharp, clear days when the mists and fogs opened up, and when the vagaries of Arctic refraction were favorable, a mountainous land seemed to rise up from the sea like a dream. The Chukchis called it the Invisible Island, and they spoke of legends of a forgotten people who lived there. They had seen herds of wild reindeer clomping north from the Siberian mainland across the ice, presumably to graze on the strange land during their seasonal migration. Flocks of geese and seabirds, too, had been seen aiming in that direction. The animals seemed to know something the humans did not.
Enticed by what he heard, Baron von Wrangel sailed for the mythic land, but he was thwarted by ice and failed to snatch even a glimpse of it. Nearly thirty years later, the captain of an English vessel searching for Sir John Franklin’s lost expedition thought he spotted a large Arctic island in the distance. Later, various whaling captains insisted they’d seen it, though their claims were disputed. A German whaler, Eduard Dallmann, was even said to have briefly landed on it in 1866.
Something was there—Petermann was convinced of it. And this land, he believed (on the basis of anecdotes from Arctic whalers and ancient reports from Russian explorers), was surrounded by open water. “It is a well-known fact,” he had written, “that there exists to the north of the Siberian coast, and, at a comparatively short distance from it, a sea open at all seasons.”
Now Petermann drove home his point: Bennett and De Long should utilize that open sea and make Wrangel Land the target of their expedition. What a contribution to science it would be to finally learn what this land was about! On their way to the pole, he said, Bennett’s party should try to land on Wrangel, explore it, and claim it for the United States.
Far Outliers 