Born on December 9, 1842 into an aristocratic family in Tsarist Russia, Peter Kropotkin developed radical ideas in the course of his scientific research. In 1874, a few hours after he presented a well-received report regarding glacial formations to the Geographical Society, he was arrested and accused of subversive activity. The following narrative, derived from his own memoir and other historical documents, details his escape from a St. Petersburg prison two years later.