Study Figure 6a, which shows a map of the city of York and its surrounding rural-urban fringe.

Key to Figure 6a
| Location / Number | Type of Edge-of-City Development |
|---|---|
| 1 | Clifton Moor (business and retail park) |
| 2 | Monks Cross (shopping and leisure expansion) |
| 3 | Heslington East (university campus expansion) |
| 4 | Askham Bar (park-and-ride transport scheme) |
| 5 | Copmanthorpe (greenfield housing estate) |
| 6 | Naburn (designer outlet shopping village) |
Using Figure 6a, name one location or development on the edge of the city of York.