Clear recommendation for fans of the genre!

1. Story
The idea of ​​this film has already captivated me in the preview, so it was clear that this will soon be a "must see".
I would not be disappointed, on the contrary, the story is much more extensive and better researched than I thought!
This is by no means simply an exploration of the catacombs.

2. Actor
The actors are convincing in the lead roles fully, in the supporting roles, at least better than in many other films.

3. Set and effects
All environments are chosen very suitable for atmosphare. You come over especially very realistic and authentic. However, I have the place all not to visit himself. Thus, so in any case correspond to my ideas;)!
The not overly existing effects fit perfectly in the course of the film, and are all well done.

In summary a really good movie with a great basic idea and really watchable implementation!
Clear recommendation for fans of the genre.

(Seen with Amazon Fire TV Stick)