There are destinies, the starting point of which is a chance meeting, and the mainspring is luck. Such is the fate of the famous Russian explorer Pyotr Kuzmich Kozlov (1863-1935). The great traveler, the famous N. M. Przhevalsky, once appeared in front of a young man who was dreaming about distant countries and spoke to him. From then on, the fate of Pyotr Kozlov, who had no prospects, and who seemed doomed to vegetate all his life in a boring, monotonous job in a provincial office, changed as if by magic. Przhevalsky, who sensed a kindred spirit in the young man, became his mentor, almost like a father, and took him into his expedition, taught everything he knew and could do. Przhevalsky's fourth Central Asian expedition of 1883-1886, unfortunately, turned out to be the last undertaking of this wonderful researcher. But for Pyotr Kuzmich she was only the first, and five more followed, with the last three headed by Kozlov himself. And each of them is a great success. Amazing works, amazing discoveries, acquaintance with the 13th Dalai Lama, well-deserved recognition, fame at home and abroad. And, of course, sensations! Discovered by P.K. Kozlov in 1907-1909. the dead Tangut city of Khara-Khoto (X-XIII centuries) gave the world a now famous rich collection of thousands of books and manuscripts in the Tangut, Chinese, Tibetan and Uyghur languages, hundreds of sculptures and ancient Buddhist shrines, and excavations of ancient burial mounds north of Urga in 1924-1925 Hunnic burials of the Han era of the 3rd-1st centuries were discovered. BC e., full of perfectly preserved fabrics, carpets, saddles, coins, jewelry, ceramics. In only one area was Pyotr Kuzmich’s luck turned away - he never managed to visit Lhasa. Tibet, the subject of youthful dreams and mature hopes, opened his heart to him, but not the walls of its ancient mysterious capital. The basis of the anniversary edition, dedicated to the 150th anniversary of the birth of the outstanding Russian traveler, was made up of two main works by P.K. Kozlov: “Tibet and the Dalai Lama" and "Mongolia and Amdo and the dead city of Khara-Khoto." The appendices contain the history of the last (Mongol-Tibetan) expedition of P.K. Kozlov (1923-1926), a brief description of the first independent (Tibetan) expedition (1899-1901), prepared by the researcher for the magazine "Russian Antiquity", and also a little-known autobiography of a traveler. In preparation for this anniversary edition Employees of the memorial museum-apartment of P. K. Kozlov in St. Petersburg - A. I. Andreev, O. V. Albedil, T. Yu. Gnatyuk - took an active part. Thanks to their efforts, the publication was enriched with carefully prepared comments and unique illustrative and photographic material. The electronic publication includes all the texts of P.K. Kozlov’s paper book and basic illustrative material. But for true connoisseurs of exclusive publications, we offer a gift classic book. Hundreds of photographs, most of which were taken by the researcher himself, maps of routes, drawings of direct participants in the expeditions and color photographs published for the first time from the collection of the museum-apartment of P.K. Kozlov made up the illustrative series of this anniversary publication. This book, like the entire “Great” series travel" is printed on beautiful offset paper and elegantly designed. Editions of the series will adorn any, even the most sophisticated library, and will be a wonderful gift for both young readers and discerning bibliophiles.