Are all parks were once a compost pit ???

Composting pit is a hole in the ground or any other surface where recycling of organic matter such as leaves, vegetable peels, fruits and other biodegradable wastes takes place naturally. Bacteria and fungi quickly and efficiently break down waste materials, producing minerals and compounds that are helpful to plants. A compost pit should be present in a cool and shady place and it must be ideally 3 feet in depth.