Complete original article extracted from the January 1930 issue of The Geographical Review. G.H.H.Tate and C.B. Hitchcock present one of the earliest systematic geographic and geological examinations of Cerro Duida and the surrounding Venezuelan Guiana region. The article integrates field observations, historical exploration accounts (Humboldt, Solano, Schomburgk), and early 20th‑century scientific analysis of the Duida–Marahuaca massif. Includes the original illustration Cerro Duida, sketched from Esmeralda (Figure 1), a map, drawings and numerous b/w photosalong with all text pages as issued. 22 pages. Ships carefully packaged via USPS Ground Advantage and Ebay International Shipping.