EARLY 90's karate movie with kids looking for treasure

[bumblefish]

This movie had a teen girl and her little brother were kidnapped and were looking for aztec or inca gold. I remember the cover had the girl with a guy behind her and she was kicking him in the face by lifting her leg and her foot was beside her head kicking the guy behind her. It had that low budget actor with a really big chin and cheek bones. i remember at the end the boy saw the gold for just a second and then a stone door closed and sealed it up for good and nobody believed him except his sister. Both kids knew karate and i think they had kidnapped the kids and their dad.
Does anyone know what this was, it was kinda like the movie firewalker but with kids.

[akiratubo]

The actor with "the big cheeks and chin" is Robert Z'dar.

Here's his IMDB page, you can look through and see if the movie is there.

http://www.imdb.com/name/nm0120494/

[bumblefish]

thank you!! I found it on the link. Its double blast.

[akiratubo]

Glad I could help.   

[JPickettIII]

I remember a movie like this.  I not sure it is Double Blast.  I will have to watch this movie for scientific purposes.

Later,

John