With all the nonsense of airspace and altitude restrictions, sometimes its just great to kick back & watch nature at work - were inane beurocracies & outdated rules are not a factor for ruining the enjoyment of your hobby. 

During a trip to the Tamatieberg, Piet Rheeders was able to film a juvenile Martial Eagle that buzzed an RC slope soaring glider.

Please refer to this website for Piet's encounter & story.