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The changes associated with the intense volcanic activity of Poás Volcano continue to give curious and valuable images to scientists studying the colossus.
A new image published by the Volcanological and Seismological Observatory (Ovsicori) on August 19th shows the sulfur columns in the massif.
On July 26th that same scientific entity published a video that show the traces of the material and its repercussions on the top of the colossus.
In fact, on Saturday there were gas emissions whose plume was possible to see at different points in the Central Valley.
The variety of sizes, color, texture and density of the plumes is enormous, varying from a few millimeters to some huge 70 centimeters (observed in March 2006). The colors go from bright yellow to dark gray. The surface varies from smooth to rough and as in this case the smallest sample probably cracks by thermal expansion.
The sulfur involved is glassy, greasy, shiny and capable of draining, so thread formation is not uncommon. In the past the exit of that sulfur from the blocks has assumed different forms that vary from huge pores to tiny cones.