My buddy ~Deadman187
is a huge Third Doctor fan, so I actually thought of him as I worked on this and two more Third Doctor related pieces.
An interesting thing I came up with the other day about the production of Doctor Who: First Doctor-era stories are set around historical periods and alien worlds, with trips to the future; Second Doctor stories prominently feature space stations and snowy mountains; the Fourth Doctor had all three, but for me his producers made good use of redressed sets from old rooms. But for some reason when I think of on-location shots (of which each of the Doctors have done) I always immediately think of the Third Doctor as the era where this was seen the most.
There's an empty lot near my house that had the right depth and angle to imitate the gravel pits that the classic series production on Doctor Who found themselves in to double for an alien world. Problem was that the sun was rolling in and out so I had to time and get everything in as perfect as possible, which puts me pretty well in line with the original series who probably encountered the same problems.