Happening in Antarctica : Sastrugi !

Sastrugi is Russian for "There's a rut there!". The singular is sastruga. The Russian meaning underscores the difficulty in walking over these wind-blown features. The ridges may be 1 meter high though usually smaller(25cm) . The ridges are often as hard as concrete; the material between the ridges usually is softer. I can personally attest that walking two kilometers over sastrugi is quite tiresome.