Scientists study how Navajo used smoke signals





Archaeologists and volunteers armed with special flares will fan out over part of the Four Corners region on Saturday to study how early Navajos could have used smoke signals to warn against invaders.

There are more than 200 pueblitos — usually high on rock outcroppings overlooking the San Juan Basin — that archaeologists believe were built by Navajos three centuries ago to protect against Spanish explorers and neighboring tribes.

"If you hear an enemy approaching, you climb into these things and pull up the ladder, and you can seal yourself in for a while," said Ron Maldonado, program manager of the Navajo Nation Historic Preservation Department.


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