Frequently Asked Questions

The Deep Underground Military Bases (D.U.M.B.) Database is a comprehensive research platform documenting publicly available information about underground and classified facilities worldwide. Our database includes verified facility locations, construction details, purposes, costs, and access information gathered from government documents, FOIA releases, and credible sources.

We employ a rigorous verification process that includes cross-referencing multiple sources, FOIA document analysis, satellite imagery verification, and expert review. Each facility entry is marked with a confidence level: Confirmed, Corroborated, Unverified, Disputed, or Debunked based on the quality and quantity of supporting evidence.

Yes! We welcome community contributions. You can submit facility information through our "Submit Facility" form. All submissions undergo our verification process before being added to the database. Please provide as much detail and supporting evidence as possible to help with verification.

Yes, our database contains only publicly available, unclassified information obtained through legal means such as FOIA requests, government reports, and open-source intelligence. We do not publish classified or sensitive security information. All data has been cleared for public release.

The database is freely accessible through our search interface. You can filter by country, facility type, confidence level, and other criteria. Advanced search features and bulk export capabilities are available for researchers and verified members. No registration required for basic access.

We partner with researchers, journalists, academic institutions, and government transparency organizations. Opportunities include data licensing, collaborative research projects, media partnerships, and educational initiatives. Contact us through our business inquiries form to discuss partnership possibilities.