Boole (tree) the largest in Converse Basin Grove, was named around 1895 by A.H. Sweeny, a Fresno doctor, after Franklin A. Boole, a supervisor of the logging operation who spared the tree's life due to its great size. Before 1931, it was thought by many to be the largest tree in the world (although the General Grant Tree was more popularly known as the largest tree in the world at that time), but it is now known as the sixth largest tree, after five other giant sequoias: the General Sherman tree, the General Grant, the President tree, the Lincoln tree, and the
Avenue of the Giants built within a giant redwood. Visible from the road, and with tours available, the front of this house is entered through the hollow trunk of a still-living tree. The front door and windows are clearly visible to passers-by, and the rest of the house adjoins the rear of the tree in a more traditional style. The Eel River is the third largest river in California. It carves deep canyons down great mountains, through flat valleys, and past majestic and ancient redwood forests. The Avenue of the Giants follows the South Fork of the river, but also features the branching of