You can visit Dali reservoir on the way to mud vulcanoes in Vashlovani National Park. For information you can visit our post on mud volcanoes of Vashlovani.
Georgian Tour Adviser (Davit Berishvili) - I have travelled to all of the places posted here and I am happy to share my experience. However, this is for informational purposes only - to help you plan your trip in Georgia. You are welcome to share, comment, correct me or suggest your ideas. Besides, you could also contact me through contact form/fb/email if you want an arranged tour. Please like our fb page to get updates. Hope you will come back soon.