Quiz: What are ‘caldera walls,’ and how do they relate to Crater L January 14, 2025 by Gideon Lakewood What are ‘caldera walls,’ and how do they relate to Crater Lake? Discover more about Crater Lake Tours at our home page. A) Caldera walls are the steep cliffs formed by volcanic activity that encircle Crater Lake. B) Caldera walls are the underwater structures that support boat tours in Crater Lake. C) Caldera walls are the flat plains surrounding Crater Lake that were formed by erosion. D) Caldera walls are the natural dams that regulate the water level of Crater Lake. Submit Answer