Group activities Group activity – boating, bowling and dinner 2023 (Groningen) Climbing 2022 (Groningen) CHAINS conference 2022 (Veldhoven) Guille’s farewell 2022 (Groningen) Vlieland conference 2022 Group dinner in 2022 Wadlopen 2021 (Pieterburen) Virtual group meeting in 2020 The group in 2019