show caves are places where the public can walk around inside a cave and thus receive some of the benefits of caving (pretty
Limestone formations and so on) without having to endure the other things which go to make up the
caving experience.
Of course, true cavers frown upon these as they generally ruin a perfectly good cave by filling it with concrete and metal. After all, there's no point in going caving if you can't wander around in the dark when your light fails, get stuck in passages which are smaller than you are or get stranded halfway up a pitch due to some failure of your SRT kit.