It seems you are having geographic dreams. First, your dream about the Scarlet Woman named "Savannah", then your dream about the hellion reptile named "Derongi". I mentioned that Savannah might actually be the location - Savannah, Georgia - and that there once were many brothels in that area, hence the "Scarlet Woman".
The name Derongi, that you heard the reptile speak in your dream, can be broken into two words, der and ongi. Der Ongi. That is German for "The Ongi". There is a river in Mongolia named The Ongi.
I like reading your dreams on your blog.