Very enjoyable. I loved the horror elements; Amy and the Welsh fella being pulled down by an unknown terror, the boy being menaced at the church door, the dissections whilst conscious, etc. I also agree with Pindar re it feeling somewhat old-skool. The setting obviously being reminiscent of The Green Death for a start.
At first I was a little disappointed with the Silurians as they were too anthropomorphic for my liking. However, after listening to the producers' comments re this - and also the comments of those on Twitter, I can see why they've opted for making them the way they have.
All in a all another strong episode in what has been a very strong season so far.