<prompt> Translate the following text to EnglishMzunguko huo unaenea hadi kilomita 16 ndani ya nchi na unajumuisha Green Grotto, pango kubwa lenye ziwa la chini ya ardhi ambapo stalactites zinaonekana wazi katika maji ya kioo.  <response>: The system stretches up to 16 km 10 miles inland and includes Green Grotto, a vast cavern with an underground lake where stalactites are clearly reflected in the glassy water. 