🇿🇲 Zambia · Archaeological wonder
Kalambo Falls – 500-ka Wooden Structure & Acheulean Gorge
Acheulean / Sangoan · Homo heidelbergensis (?) woodworking
235 m single-drop waterfall with gorge stratigraphy preserving 500–300 ka Acheulean woodwork: 476-ka interlocking logs (world's oldest wooden structure, Barham Nature 2023) and 500 ka mortised timber.