An extreme adventure tour group headed by deep caving expert John Palmer descends into a 2000 Ft abandoned salt mine , that was mysteriously closed down years ago after an unexplained disaster trapped all of the miners . They prepare for rock slides , blackouts , cave-ins - whatever might threaten their journey and commence their descent into the depths.
| Actor | Role |
|---|---|
 Christopher AtkinsJohn Palmer | John Palmer |
 Colm MeaneyVincent | Vincent |
 Angela FeatherstoneSamantha Palmer | Samantha Palmer |
 Monica BîrlădeanuSophie | Sophie |
 David PalffyMarcel | Marcel |
 Chelan SimmonsEmily Palmer | Emily Palmer |
| SStevie MitchellMiles Palmer | Miles Palmer |
 Marius ChivuHanz | Hanz |
 Cristian PopaStephan | Stephan |
 Vlad JipaCarlo | Carlo |
 Răzvan PopaMuller | Muller |
 Marius CapotăIon | Ion |
| DDan SăndulescuLuciano | Luciano |
 Adrian PinteaSupervisor Frisch | Supervisor Frisch |