Sandpit

A sandpit (Commonwealth countries) or sandbox (US/Canada) is a low, wide container or shallow depression filled with soft (beach) sand in which children can play. Sharp sand (as used in the building industry) is not suitable. Many homeowners with children build sandpits in their backyards because, unlike much playground equipment, they can be easily and cheaply constructed. A "sandpit" may also denote an open pit sand mine.