“Oh.” Martin blinked, looking up from her rapid series of scrolling images. “I thought that was obvious.” She scrolled to another image, this one little more than a black, melted slurry. It looked like a volcano had erupted and covered over everything. “This is what happens when the ring doesn’t cool its exterior surface. The internals appear unaffected, but the outsides…” She zoomed out. The melted slurry went on and on, an endless wasteland that dwarfed Equestria many times over. A quick glance suggested nearly half the ring looked this way, entirely contiguous. The only exceptions were occasional openings for the ring’s own systems, which were entirely devoid of the uneven rocky debris.