Final answer:
An ecotone is a transitional zone between two ecosystems or habitat types. Kincaid Rockshelter is located in such a zone.
Step-by-step explanation:
An ecotone is a transition zone between two distinct ecosystems or habitat types. It is characterized by a mixture of plants, animals, and environmental conditions from both ecosystems. In the case of Kincaid Rockshelter, being located in an ecotone means that it exists in a transitional area between two different types of habitats, which could be a forest and a grassland, for example.