Reykjadalur is a geothermal valley located in South Iceland. The name "Reykjadalur" translates to "Steam Valley" in English. It is situated around 40 km (25 miles) from the capital city of Reykjavik and is known for its scenic hiking trails and hot springs.

One of the main attractions in Reykjadalur is the hiking trail that takes visitors through the valley, offering stunning views of the surrounding mountains and rivers. The hike is considered moderate in difficulty, and takes about an hour and a half to two hours each way, depending on the fitness level of the hiker. The trail is well-marked and easy to follow, and it is also possible to take guided tours of the valley.

The hot springs in Reykjadalur are another popular attraction. These hot springs are fed by geothermal activity and offer visitors the chance to soak in warm water amidst stunning natural surroundings. There are several hot springs located throughout the valley, and some are even hot enough to cook eggs in.

It is important to note that visitors are expected to practice responsible tourism and not leave any trash behind. Additionally, visitors are asked to stay on the marked trails to avoid disturbing the natural environment.