B 4715 M ~ TLAND : -a PLACE COLOMBO 7 - Thakshana e-Library1.1 Line. 1.2 Lime. 1.3 Uses of line and its derivatives. Chapter 2 - General Geology of Sri Lanka. 2.1 Highland Group. 2.2 Southwestern Group. 2.3 Vijayan Complex. 2.4 Intrusives. 2.5 Sedimentary rocks. Chapter 3 - Reserves and Resources. 3.1 Reserves. 3.2 Resources. 3.3 Prospecting for line.line in sri lanka,Hunugalagala Line Cave - WikipediaHunugalagala is a Line cave, which is located in Haldummulla, Badulla District of Sri Lanka. It is assumed that this rock formation has been formed millions of years ago. The cave and the surrounding area has been used between 5,000 and 4,000 years ago. Archaeological excavations have been started in July 2013.