The International Border Research Group is an organisation of border enthusiasts, experts and academics who organise and support research into international borders, tripoints, border markers and other border related features. The group arranges international visits to international borders annually and members share the outcomes of their individual or smaller group visits. The group acts as a resource pool in supporting members in their expeditions. Members of the group have visited borders and tripoints in most continents.
More information about the IBRG is found here. The current President is Jan Krogh, author of the well regarded Geosites website. As an associate member the links to the trips I have participated in are found on the right side of this page.