One morning we came across a pride of lions with half-grown cubs.  Their bellies were full and they were strolling toward a sleeping area.  They stopped to play on this downed tree.  We smiled and took pictures for half an hour.  They were only 25 feet from the van.  I couldn't even focus on them with my 600mm lens.  They were too close.

The trees in the background are some sort of acacia, a throny member of the bean/pea family.  Mara actually means dotted, and it's the sprinkling of acacia trees that gives the plains that name.