URL https://www.researchgate.net/publication/322138747/figure/fig1/AS:622757855371264@1525488451251/Location-map-digital-elevation-model-and-telescopic-grid-system-for-high-resolution.png
URL2 https://www.researchgate.net/figure/Location-map-digital-elevation-model-and-telescopic-grid-system-for-high-resolution_fig1_322138747
