Why would people in a caravan be glad to see an oasis?

People in a caravan would be glad to see an oasis because it represents a vital source of water and food in a harsh desert environment. An oasis provides a much-needed opportunity for rest, replenishment, and rejuvenation after long, arduous travels. Additionally, it offers a chance to refresh supplies and socialize with other travelers or local inhabitants, making it a welcome and life-sustaining refuge.