The Cueva del Lobo system has a total development of 14,740m and a denivelation of 283m. This is a "grand classic" traverse caving "through trip" of Cantabria, Spain. It took us 9 hours and 50 minutes to complete this classic. We made a late dinner break of 30 minutes in "Black Meander". [www.raducdumitru.blogspot.com]