It's glow time

Down under the land in the Land Down Under, cave explorers may find these subterranean spaces illuminated by an unlikely light source. Fungus gnat larvae – more affectionately known as glowworms – speckle the walls and ceilings of caverns here in Australia during the warm season from December to March. To humans, they're hypnotisingly harmless and add a little otherworldly charm to the caves in such places as Blue Mountains National Park, as seen in our photo. But if you're a fly or mosquito, beware! Glowworms dangle tiny, sticky silk strands that ensnare winged insects flying toward what looks like a starry night sky, but is in fact the cave ceiling, covered in glowworms, patiently waiting to reel in a deceived fly.
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