in some cases, cloud coverage in Bing aerial imagery obstructs the area to be mapped, in these situations we have DigitalGlobe imagery as an alternative source;
Wakati mwingine, uwepo wa wingu katika picha za anga za Bing inazuia hilo eneo kutengenezewa ramani, kwa hali hiyo tunatumia DigitalGlobe kama mbadala kwa hilo eneo.