Szalajka Valley (Hungarian: Szalajka-völgy) is a picturesque valley located in the Bükk Mountains in northeastern Hungary. It is situated near the town of Szilvásvárad, which is approximately 25 km from the city of Eger.

The valley is a popular tourist destination due to its natural beauty, which includes waterfalls, caves, and rock formations. There are several hiking trails in the area, ranging from easy walks to more challenging hikes. Visitors can also enjoy activities such as horseback riding, mountain biking, and skiing (in the winter).

One of the main attractions in Szalajka Valley is the Fátyol waterfall, which is approximately 17 meters high and is surrounded by lush vegetation. Another popular attraction is the Istállós-kő cave, which is open for guided tours.