The Lake Malawi Deep-Anoxic Manganese-Staining
27 Apr 2min
The Okavango Delta Peat-Tannin Stasis
27 Apr 2min
The Lake Katwe Salt-Crust Calcification
27 Apr 2min
The Witwatersrand Gold-Tailing Cementation
25 Apr 2min
The Etosha Pan Calcrete-Dust Encapsulation
25 Apr 2min
The Fish River Canyon Siliceous-Abrasion
25 Apr 2min
The Ural Mountain Asbestos-Dust Attrition
25 Apr 2min
The White Nile Limno-Silt Neutralization
25 Apr 2min
