Visitor centre museum is free and unmissable tribute to emigrant journey on horse carts foot over icy brutal Sierra Nevada Range Mountains .Help of natives and human strength weaknesses were revealed in this pilgrim progress .Chinese efforts to create road way in difficult circumstances is acknowledged.Spiritof California Republic emerges and gen next is reminded of the past .Unmissable store with great books on wildlife trees all the gifts of nature this heaven of Tahoe of Washoes natives has.Do not drive past this.Donner Lake trail is a bonus .