1870 ca, IRELAND: Brickeen Bridge, KILLARNEY. Muckross Lake, also known as Middle Lake or Torc Lake, is just south of Lough Leane. The two are separated by a small peninsula, crossed by a stone arched bridge called Brickeen Bridge. It is Ireland's deepest lake, reaching to 75 metres (246 ft) in parts. The Lakes of Killarney are a scenic attraction located in Killarney National Park