Tarp

Apparently, the Bloons have found a way to trick the monkeys, with a new terrain type. Tarp is what it's name applies, a hidden tarp. Thankfully, it can only be found on land. It can support 5 towers before falling in and destroying them. Since it can't be seen, you're probably thinking... "How am I going to find these things!?" Well, don't worry. The Monkey Village's radar scanner will reveal the outlines of all tarps in range. Oh, and I forgot to mention that Temple of the Monkey Gods will fall in if built on a tarp, no matter how few other towers are on it!