BOTSWANA

P1.80: this 2016 issue features elephants bathing in the Okavango Delta

ETHIOPIA

10c, 40c, B2: three stamps from a 2016 set depicting waterfalls, including on the Blue Nile

EQUATORIAL GUINEA

100bk: this colorful holiday stamp was issued before Equatorial Guinea adopted the regional CFA currency, and reflects a former denomination.