The Monolith Quarry is a museum located in Halden. The museum focuses on the history and significance of quarrying in the area, with a particular emphasis on monolithic stone. Visitors can learn about the various techniques that have been used throughout history to extract and process stone, as well as how this has influenced local culture and industry.
The exhibition includes both permanent and temporary collections, which showcase tools, machinery and other objects related to quarrying. Guided tours and activities are also arranged to provide a deeper understanding of the history of the quarry and its role in the development of society. The museum is therefore an important resource for both locals and visitors who want to explore Halden and the area's industrial history.