Alas, I don't have any info : the new is too recent. Franco-Japanese Serie.
http://movie-plus.com/projects/movie/gold.html
Mysterious Cities of Gold was a bit kiddie, but very interesting show in the 80's. Pretty standard fare of Atlantean vs Mu Empire, but well done, with great music.
Here is the best I could fin, a youtube link..
(Ok, it's a cheesy show, but it was very popular in Europe and Canada...)
http://www.youtube.com/watch?v=9wKboOd7E2E