The Quarterly Journal of the Geological Society of London. v. 11 (1855). London, Geology, Periodicals, The illustration presents a detailed topographic profile of the Turko-Persian frontier, showcasing various geographical features and elevations along the route from the region labeled as 'Bayazid' to 'Evan Zard.' Marked points indicate significant locations, including cities and natural landmarks, with distances noted from a base reference. The elevation contour lines visually represent the changes in terrain, highlighting valleys, hills, and peaks. Various annotations provide additional context regarding specific geographical characteristics and historical notes relevant to the area. The diagram serves as a valuable reference for understanding the topography and strategic significance of the frontier region.