which existed about 3 billion years after the big bang.

shows a diver in the La Mina Roja passage of the Sagitario underwater cave system near Playa del Carmen in Mexicos Yucatan Peninsula.was to prospect and mine red ocher.

adding: Considering the massive scale of this mining.twisting labyrinths of now-submerged sinkhole caves.food or water? Nine sets of human skeletal remains have been found in the underwater caves.

Pelton agreed that among the first inhabitants of the Americas.Red ocher mining seems especially important during the first period of human colonization.

whose passages can be barely big enough to squeeze through.

or did they go down intentionally seeking shelter.but for failing to detect and thwart Hamas Oct.

He was a prisoner himself for decades in Israel before being freed as part of a controversial 2011 prisoner swap for the release of Israeli soldier Gilad Shalit.two officials with knowledge of the negotiations said.

including an American mother and daughter.Recent weeks have brought a flurry of activity.