In the desert on a cloudy day , a long camel caravan makes several curves away from the camera , the last camel passing a sign along side the trail .
It is impossible that the caravan is carrying special spices and other supplies to trade with distant cities to the east .
It is impossible that the caravan is carrying special spices and other supplies to trade with distant cities to the east .
There is a better than even chance that the caravan is carrying special spices and other supplies to trade with distant cities to the east .
The caravan is carrying special spices and other supplies to trade with distant cities to the east .