最早開發前當地人管這裏叫“郊野公園”。峪口奇奇峰絕壁處獨立一危石，危石之上又置一險石，無依無靠，風吹石動，大有神石蓋頂之感。峪內怪石橫溝，巨石盤踞要塞。於是，印入腦海的第一印象便是“石勝”。

由長陵順公路向西北進發，自錐石口，沿小溪山路挺進，兩山聳峙，懸崖峭壁，層層疊疊，如去如波。穿越碓臼峪村，但見一座雄山屹立，突兀眼前，擋住去路。

日期2023年4月1日，出門前特意查了攜程和年票小程序，都显示開業，到門口依然吃了閉門羹，也不知道是景點的問題，還是攜程網站的問題；既然攜程無法提供準確開業信息，建議列出景點電話。我們只好沿着邊牆子路車游，后2張照片是路邊野景。

在這個初夏的時節，我們將來到位於昌平明十三陵西北約4公里的碓臼村北的碓臼峪自然風景區，開啟一場徒步自然觀察之旅。據地質學家考證，在1億3千多萬年前，這裏發生了強烈地殼變動，形成了奇特的花崗岩體。景區長約3公里，沿途有50餘個觀賞點，兩側奇峰林立，一水中流，有京北“小三峽”之稱。這裏除了峻峰怪石，還有很多奇花異草。我們的博物老師將會帶領大家觀察獨特的地質結構，探索多彩的山間植物，了解奇特的水生生物，尋找奇妙的各種昆蟲。天氣漸熱，正是各種昆蟲活躍的時候。仔細尋來，原來它們就在山間溪流旁嬉戲玩鬧。

In Changping Mountain, Jiuyu belongs to the terrain of two mountains and one river. From the entrance, there is a river that has been accompanied by the way into the mountain, either left or right. Listening to the gurgling water, walking along the path, I feel happy. The only uncomfortable thing is that the entrance fee seems to regard the scenic spot as the village's own industry, and there is no ticket to enter the gate, so I can only haw.

The sky in the natural scenic spot of Jiejiuyu is especially blue, with white clouds hanging in the sky, which is very beautiful. The water is also very clear, the wind blows, ripples. The only thing I want to remind you is to wear more clothes. It's windy and cold in the mountains.