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When Did The Grand Mesa Erupt?

January 24, 2024 by Diane Mitchell

When Did The Grand Mesa Erupt? The mesa is topped by a hard layer of volcanic basalt. This layer formed between about 10.9 and 9.6 million years ago, by the eruption of at least 27 separate lava flows from a vent in the Crag Crest area and probably other vents. Was the Grand Mesa in

What Did The Olmec Carve Into Their Giant Stone Heads?

January 24, 2024 by Maria Kunar

What Did The Olmec Carve Into Their Giant Stone Heads? The Olmec are probably best known for the statues they carved: 20 ton stone heads, quarried and carved to commemorate their rulers. The name Olmec is an Aztec word meaning the rubber people; the Olmec made and traded rubber throughout Mesoamerica. What did the Olmec