It was a little bit larger than it appears here. And this must have been taken years after they used it. The trees were smaller then so it had more sun and this has become overgrown. Looks like no longer used. Of course, these were among the first Komodo dragons in North America and we were still learning about their husbandry. Now they are almost common.
@Matthew Guimac it's pretty good if you ask me, better than what I have seen for Komodo Dragons, but in my experience I have only seen outdoor exhibits at Cincinnati.