It doesn't show up very well at this scale, but the droplets on the ends of these stalactites did a nice job of reflecting and refracting (both are involved) light from my flash back to the lens, so it looks as if there's a little twinkly light at the end of each of the so-called "soda straws." I'll get into the chemistry of how these sorts of speleothems form later, but I have some chores that need to get taken care of (Otherwise Bif will eat me in my sleep.) before I go home.
Photo unmodified. May 9, 2013. FlashEarth Location. (Since we're underground, I have only a vague idea where this is with respect to the surface.)