César Figar Velasco

Obras Subterráneas SA engages in the provision of civil infrastructure engineering and construction services. The firm specializes in the construction of civil infrastructure works including railway and highway tunnels, subway lines, roads, motorways, and hydroelectric power stations. It also provides waterproofing, installations, ventilation, electricity, and system services. The company was founded in 1952 and is headquartered in San Sebastian de los Reyes, Spain.