The core activity of Gebrüder Vontobel AG is the provision of excavation services and related activities in the Zurich Oberland region. Specifically, this includes: demolition work of all kinds, including dismantling and disposal of construction materials; excavation work, including smaller excavations for retaining walls, single-family homes, and earthworks, as well as land rehabilitation; environmental work, including the construction of stone walls from quarry or natural stones; pipeline construction, including trenching and laying of pipes and shafts of all kinds; and crawler excavator work. The company positions itself as a specialist in excavation services in the Zurich Oberland region and offers its customers a comprehensive range of services in this field.