Geological Map of Asia by A.K. Johnston – Mountains and Valleys 1852This finely engraved and hand-colored map titled "The Mountains, Table Lands, Plains & Valleys of Asia" was created by Alexander Keith Johnston and published in 1852 by William Blackwood & Sons, Edinburgh and London. It is Plate 6 from Johnston’s influential Physical Atlas of Natural Phenomena, a landmark in thematic cartography that transformed the way scientific information was visualized and disseminated in the 19th century.This map provides a physical topography of the Asian continent, distinguishing mountainous regions, elevated plateaus, broad plains, and deep valleys using subtle but effective color gradients and hachuring techniques. It visually separates highland and lowland areas through natural earth tones—green for lower elevations and brown for uplands and ranges—offering a clear sense of the continent’s relief.Major geographic features such as the Himalayas, the Tibetan Plateau, the Altai and Ural Mountains, the Gobi Desert, and the river basins of the Yangtze, Ganges, and Indus are all meticulously labeled. It also identifies the vast steppes of Central Asia, the fertile valleys of Southeast Asia, and the volcanic chains of the Indonesian archipelago.Rather than being a political map, this chart focuses on the geological framework of the region, a scientific approach that makes it a valuable tool for understanding the environmental forces shaping the continent. The precise execution reflects Johnston’s background in both geography and engraving, as well as his dedication to making complex data accessible to a broader audience.Alexander Keith Johnston (1804–1871) was one of the leading figures in 19th-century mapmaking. His Physical Atlas was among the first atlases devoted entirely to natural phenomena and was widely used by educators, scientists, and explorers alike. The maps in this series remain some of the finest examples of scientific visualization in antique cartography.Condition and framing tips:Excellent condition with light age toning and very clean printed surfaces. Ideal for framing in a black, mahogany, or walnut frame with an ivory, pale green, or warm earth-toned mat to complement the natural hues. A sophisticated addition to any library, study, or collector’s wall.