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Lava left its mark on Grand Canyon Friday, 15 February 2008 Larry O'Hanlon Discovery News Volcanic lava flows onced dammed the river that ran through the Grand Canyon (Source: iStockphoto) The Grand Canyon was not just carved by water. It has also been the scene of periodic wars between the Colorado River and volcanic eruptions that dammed the river, then burst. New airborne elevation survey data and radioisotope dating of Grand Canyon lava flows sheds new light on the battle between water and molten rocks there over the past 725,000 years. Over that time there have been no fewer than...

Etna awakes with storm of fire and lava By Malcolm Moore, Rome Correspondent (Filed: 18/07/2006) Mount Etna, the largest active volcano in Europe, threw fire and rocks more than 800ft into the air yesterday. Spectacular: The explosions are coming from two holes near to the top of the volcano Etna, which is almost 11,000ft high, sits 18 miles from Catania on Sicily's east coast. Several villages lie on its lower slopes, but the Italian government said yesterday that the lava was flowing away from them, and that there was no immediate danger. The explosions are coming from two holes near...