From the headwaters of Slieve Croob in the peaks of Dromara, beyond the Mountains of Mourne, the River Lagan grows in its vastness and arrangement of tributaries as it sweeps and meanders down to the Lagan Navigation and out to the Irish Sea. The patchwork of valley landscapes from wet meadows, ponds and ditches to mixed beech woodland, parkland and pine plantation provides a network for wildlife and a passage to our past.