The Turner family has been coming to this rugged spot in the Sawtooth Mountains for over 25 years, yet it was only a short time ago that they decided to build their ideal family retreat here. Working with architect Bob White, two generations of the Turner clan (mother Mary Lynn and daughter Marie) combined their talent for decoration to design a collection of five structures, each clad in a different rough-hewn material, and all of which look as if they have always been a part of the scenery