Volcano experts have recovered blocks of lava that were expelled as flaming chunks from the Volcán Turrialba. This is confirmation that lava exists just a few hundred feet below the crater.
The Red Sismológica Nacional said its experts made a field trip to the volcano crater Friday and recovered samples.
The material is basaltic andesite, a typical product of Costa Rican volcanoes.
The experts have been studying the ash to see if there was lava in it, but with the recovery of the basaltic pieces, there is no doubt, the Universidad de Costa Rica agency said on its Facebook page.
This is the same sort of glowing material that was expelled for years from the Arenal volcano and drew tourists from all over the world.