How Masks Have Begun to Leave Their Mark on National Parks Last Sunday, Carlsbad Caverns National Park posted on Facebook a photo of a mask in the caves with a reminder to all to respect nature – “Since becoming a National Park, we have seen changes in our caves caused by our presence. Many have damaged the formations, knowingly and unknowingly, by touching the cave walls and speleothems, as well as […] Liam Abbott | December 27, 2020 2 Comments