NATIONAL GEOGRAPHIC EXPLORER - Season 11 PROMOS

Phil Keoghan ventures inside the active Masaya volcano in Nicaragua.

Bald eagle talons are capable of doing some serious damage, so Phil Keoghan and Co. must be extremely careful when studying these majestic creatures up close.

In Gaza, Israeli and Egyptian blockades have driven business underground—literally. Explorer correspondent Mariana Van Zeller gives us an exclusive peek into an underground smuggling tunnel, 200+ feet under the surface.

Explorer correspondent Tim Samuels takes an in depth look at a community that rallied together to save saltwater crocodiles from the brink of extinction.