10 Lost Tribes?

They found some area in Indonesia never before explored. A couple of scientists checked it out and found species of animals not found anywhere else in the world. They only went in a couple of miles, so there is still a lot of land to explore.
I want to know: when they eventually find a tribe of people there, will they be (one of) the 10 Lost Tribes?

Why is it that whenever discussing the 10 Lost Tribes, people always take it as impossible because there is no area of the Planet earth that is not accessible, especially because of the advent of air travel and satellite imaging? Looks like we are still finding parts of the world never before noticed...