The word "rockpile" is often used to describe a pile of rocks or stones that have been put together in a specific area. However, there are several synonyms that can be used to describe such rock formations. These include words such as boulder pile, rock stack, stone heap, rock mound, and rocky outcrop. Each of these words describes a pile of rocks in a unique way, and they can be used interchangeably depending on the setting and context in which they are being used. Whether you are a geologist, hiker, or simply someone who enjoys exploring the outdoors, these synonyms for rockpile are sure to come in handy.