Show worlds largest monolith I 1 london en engineering gi illustrates and an describes the largest monolith yet built two of 0 these structures form M the s t the roundhead roundheads round heads ar at t the entrance 0 fin ane lie midland a d railway company companas Comp anys s harbor at hey Heys sham liam I 1 in morcombe Mor lor cambe bay the roundheads round heads aro are t three hundred feet set apart anil and only a short distance removed from the main channel formed by heysham Hey shain lako they are built on bonoli monoliths I 1 bs which constituted one of 0 tile most I 1 interesting ante I 1 esting features or of the works for being afar at five feet in diameter they were we uw thu largest constructed in connection with harbor works |