Logarithmic scaling in an African Windscreen

Most places in the world fences are boring grids, but in Africa many fences have rows that get shorter and shorter as they go up. The artisan in the red cap below (near Bamako, Mali) explained why: Next Page >>

Diagonal lengths of straw rows from bottom to top:
16 12 8 6 5 5 3 3 2 2

Outskirts of Bamako, Mali