Finally got round to finishing this!
A concept for the retheme of a log flume ride at Chessington World of Adventures called Dragon Falls (personal work). The original sketches and more information can be found in this earlier blog post. It was by far not the best concept I came up with, but it was the nicest of the drawings from the original batch. I may explore other concepts with this, it's good practice.
I think it turned out quite nice, but foliage colours still drive me a little crazy. In fact, all the colours in this were a bit of a nightmare. The rocks had to be grey - it was most appropriate to the theme and to distinguish them from other areas of the park, but grey needs other colours in it or else it looks horrible.