STUVA e.V. has been organising scientific conferences since more than 50 years. STUVA's conferences are held bi-annually, late November/early December in odd years, and have become a fixed date in the calendar of many national and international tunnelling experts. The conference covers recent developments in all fields of underground construction with special focus topics, e.g.: new technologies, design, construction, maintenance, economic issues, safety and risk during construction and operation, contractual issues from tendering to awarding, etc.