SOSSUSVLEI, Namibia -- Our children kicked off their sneakers at the foot of their first giant sand dune here. As soon as we stepped out of the car, they were running and laughing up the spine of the red dune. Within minutes they appeared as tiny figures against the blue African sky. We scurried behind with our guide, Cornelius ''Bokkie" Mitton. Bokkie, which means ''goat" in Afrikaans and is a nickname he picked up as a child, shook his head. ''Are you really going to go up there?" he asked. We told him to take a breather as we followed the tracks of our children up the 500-foot hill. Cool sand spilled into our shoes. It was just 7 a.m. and our footprints, along with those of a few beetles and a jackal, were the only marks on the windswept surface. Soon, the children were running down the hill at breakneck speed and asking Bokkie for more. Never before had they begged to hike. Through the years, we have learned -- sometimes the hard way -- that traveling with children is about pacing. That means going at their pace, satisfying their interests, feeding their hunger, and finding a compromise between our desires and theirs. Namibia, more than any place we have visited, lent itself to the likes of our children.