Not really, if you're entering Iranian airspace from the Mediterranean, the Persian Gulf, or Europe, you're flying over either the Zagros Mountains or the Alborz Mountains. Unless you crash/eject in a city, you're almost certainly going to be in the mountains. Look at a map.

Iran isn't just central Tehran. Look up the Zagros Mountains and the Alborz Mountains. Or just look at a picture of the northern Tehran skyline, it is at the foot of the Alborz, a huge mountain range. There's plenty of woodlands and forest too. Some parts of the Hyrcanian forests get over 50 inches of annual rainfall, which isn't Forks, WA, but it is substantial.