This complex, which is part of a programme to safeguard megalithic sites, presents a group of three major monuments. The first is the Grand Menhir Brisé, a "broken" monolith that once stood 18m high and weighed 330t. Erected around 4500 BCE, it was part of a row of no less than 18 stones. The Merchant's Table is a funerary chamber preceded by a 7m-long corridor. The site also includes the Er-Grah Tumulus, which is estimated to have been 170m long originally.