Viaje al centro de la Tierra

It's always difficult for me to watch a movie after having read the book it's allegedly based upon. Anyways, I decided to try this one, and I have to say I can't find any part of it that'd be based on the Jules Verne novel (except the title, of course). It's amazing to see how professor Otto Lidenbrock from Hamburg became Jonathan Brock, his nephew Axel became Abel, how his Danish guide Hans Bjelke morphed into Sergei Petrov, and how the expedition that originally started in ICELAND at the end of June, suddenly changed to Alaska in September. But most important is the complete lack of respect for the original plot and its characters, to the point that the movie shares nothing with the book they say it follows. I do understand that most books can not be adapted faithfully to the screen, but there's a difference between taking a few creative licences and making a completely different story. So, I'd like to ask Mr. William Gray to, PLEASE, read the book before saying his script is based upon it, or otherwise take the credits (and responsibilities) of signing his own stories.