Why are not all volcanoes monitored?

Not all volcanoes are monitored due to limitations in resources, funding, and technology. Many volcanoes are located in remote or undeveloped areas, making it challenging to establish monitoring equipment and personnel. Additionally, the prioritization of monitoring often focuses on volcanoes with a history of eruptions or those posing a significant threat to populated areas, leaving less active or remote volcanoes less monitored. This results in gaps in data and potential risks in regions that are not closely observed.