For Redrobes, here are some connecting corridors using the same textures as this map:

Corridor-1_bg.jpgCorridor-2_bg.jpgCorridor-3_bg.jpgCorridor-4_bg.jpgCorridor-5_bg.jpgCorridor-6_bg.jpgCorridor-7_bg.jpgCorridor-8_bg.jpgCorridor-9_bg.jpg