Today we visited Sequoia and Yellowstone National Parks. We started our drive on the General Sherman Highway. This road has 108 switch backs. It was very curvey. We hiked to the General Sherman tree. This tree is the largest tree in cirmcumfrence in the world! One placard read that "looking up at the tree is like a mouse looking up at a 6 foot person." We found huge yellow pine cones they measured about 8-10 inches in length. Then we left for Yosemite National Park. In the historical town we saw a blacksmith and took a stagecoach ride. We also saw a jailhouse. Then we saw a miniature log cabin made of lincoln logs. We were on the Merced River and it was very cold. We got to see a really neat waterfall. It is the biggest one in the nation and fifth in the world. We drove through a tunnel in a big fallen rock. We got to see a rock slide and there were temporary bridges and the rocks covered the road and went down to the river. Then we left for Modesta. Tomorrow we are spending the day in San Francisco. It was a really fun day!