Outlands Head Cave - additional information
References
(1973) , D.C.A. N/L No.17., p.2., Derbyshire Caving Association
(1973) , S.U.S.S. N/L No.21., , Sheffield University Speleological Society
(1976) , E.P.C. Jour. Vol.9. No.1., pp.13-14. Survey., Eldon Pothole Club
(1989) , Descent No.91., p.14., Wild Places Publishing
(1989) , Descent No.88., p.16., Wild Places Publishing
(2010) , Caves of the Peak District, p. 62, DCA