And we couldn't resist a return to Gorongosa when Carr sends invitations like this. Greg Carr: Just come and sit at a sunset by the lake, in the center of this national park, I mean, time stops.

In Mozambique's Gorongosa National Park, not just the animals are thriving Greg Carr: Well, step one, we had to remove 20,000 traps and wire snares that were left in this park, left over from the war.

Today, Gorongosa National Park employs 1,600 workers. Tourism brings in cash which goes to the people and to the park and Greg Carr has partnered with the government on health care and education.