A series of major new commissions by international artists are being presented this summer by Artangel on Orford Ness -a windswept strip of land stretching several miles along the Suffolk coast owned by the National Trust and known locally as the 'island of secrets'.Accessible only by boat, Orford Ness's environment shifts from mud flats, salt marshes and brackish lagoons, to shingle ridges that are home to a unique ecosystem of flora and fauna and an eroding coastline.