Underground churches are religious congregations that operate secretly, often in response to government restrictions or persecution. These churches typically meet in private homes or hidden locations to avoid detection by authorities. They provide a space for worship, prayer, and community support for believers who may face legal or social consequences for their faith. These underground movements are common in countries where religious freedom is limited, such as in some regions of China or North Korea. Members often rely on strong networks of trust and shared beliefs to maintain their gatherings and protect one another from potential risks associated with their faith.