Ghost Cities of the Ghaggar-Hakra: LiDAR Reveals Urban Planning Amidst Aridification

New high-resolution LiDAR scans of sites near Rakhigarhi reveal a sophisticated, decentralized urban grid that flourished specifically during the Late Harappan phase when the Ghaggar-Hakra flow diminished. This indicates that hydraulic management was not merely about irrigation but included complex stormwater retention and fog-harvesting architectures previously invisible to surface archaeology.

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