These two small uninhabited islands, between Luss and Balmaha, were passed into the care of the Trust by Col Charles L Spencer of Warmanbie, Dumfries, in 1943.
Situated to the east of Bucinch, Ceardach is known locally as Tinker's Island. It is a tiny islet which is little more than a rocky mass surrounded by deep water. The island supports oak and willow trees, while brambles and holly are also plentiful. During dry weather, and thanks to the shallow soil, Ceardach enjoys a peculiar natural quirk in summer, when the soil quickly turns the vegetation brown, giving the island a premature autumnal feel.
Ceardach has a natural harbour, which is easily accessed near some flat exposed rocks, making it suitable for picnics. Archaeological evidence has also uncovered traces of an Iron Age furnace dating back centuries, which could have been used for melting ore.