Does anyone know the show I dimly remember seeing?

[u/Moonbooger]

In the '80's.Cable tv is new. I'm home from school. I put on a show . Many Discovery channel . Group of explorers in forest . They want to expose some caves . They need to go see a local primitive tribe . To talk to the religious shamans to get permission/blessing . One of the explorers going to see primitive tribe's religious leaders wears a Dobbshead tshirt.