Doline, also known as a sinkhole, is a natural geological depression in the earth. There are a variety of different synonyms that can be used to describe these formations. For instance, some may refer to a doline as a swallow hole, a shakehole, or even a cenote. Additionally, a doline may be referred to as a sink, a ponor, or a uvala, depending on the location and the specific characteristics of the feature. Ultimately, there are many different words that can be used to describe a doline, and each of them offers a unique perspective on this fascinating natural phenomenon.