First of all, Robin Cook surprised me with this here novel. This is way different from his standard fare which admittedly is already quite readable. With this effort though he clearly reinvented himself. This is quite Michael Crichtonesque and less Robin Cook.

The premise: (stated in a few key words) Exploration, Deep Sea, Secret Base,
The argument: Add the traditional characters and interaction (three stooges/hillbillies, the rational scientist, the unyielding military man, the arbiter - a rich tycoon) trying through dialogue (extrapolation, induction, deduction) to solve a baffling mystery within a plot reminiscent of the classic Jules Verne and H . Rider Haggard works.
... And the conclusion is: right up my alley😊

Highlights in quote: "None of them are Russians. - Well, none of them are Americans neither. There is not a single overweight person.😁
"You are delightedly primitive". -"You are yanking my chain..." - Not at all... Not at all.😁 ( )

This story has a very old school pulp fictiony feel to it. And Robin Cook did a brilliant job of making it feel like this story was written in the 1950's. There are some parts that does give the story away as a modern tale, but somehow it does not detract from the pulp fiction feeling.
Which was not quite the type of story in mind when I started the book, but I enjoyed it in the end, except for the very ending... I would've liked it more if the main characters made it back home.

( )

I suspect that this book would not have been published if it didn't have a best-selling author's name on its cover. It was awful. ( )

Cinco personas que viajan en un submarino son abducidos a través de un volcán que se encuentra en el fondo del mar. El resto de los compañeros los da por muertos. Esta abducción les transportará a Interterra, un lugar paradisíaco habitado por los que dicen ser la primera generación de humanos.

GU-1