List your project in a registry
Community
Make your work findable through open-archaeo and similar community lists.
It may be beneficial to include your project in a community registry to ensure that the work is findable and accessible by target audiences.
Archaeologists may consider reaching out to open-archaeo.info, which is a list of open source software and resources developed by and for archaeologists. AncientMetagenomeDir is a similar resource specializing on tools developed in support of ancient DNA research.
Additionally, the archaeology CRAN task view lists numerous studies that include publicly accessible R code, which is a great resource for understanding how the community uses R in their research.