Can you see right down to the ground or is there an inner 'floor' to the tunnel directly under the track?
Crealy are making a habit of tunnelling over the best parts of their rides, they put a useless tunnel on the main hill of the log flume and now on the first hill of this, both of which let a lot of light in anyway, I think if they'd put a tunnel over the last helix and put some nice lights in there or one of their lion statues it would have been pretty cool.
Anyway it's still a nice effort and good to see some money put back into the ride especially considering it's a small park, so I can't complain too much!