Doab Recreation Area, Siahkalrud

The Doab recreation area is one of the most beautiful natural attractions of Siahkalrud District in Rudsar County, and is considered one of the most popular recreation areas in eastern Gilan. It lies at kilometer 22 of the Rudsar–Chaboksar road, at the start of the route to Javaherdasht village and before Doab Waterfall. The name Doab ("two waters") comes from the confluence of two rivers that rise in the highlands of Javaherdasht and on the slopes of Samamus Peak. After joining, they form a full, fast-flowing river in the heart of the region's forests. Because the area lies on the route to the summer pastures of Javaherdasht and the Samamus mountains, visitors can take in forest, river and mountain scenery all at once.

The most notable feature of Doab is its rushing river and very cold water, which stays pleasantly fresh and cool even on hot summer days. As the water flows between large boulders and over the rocky riverbed, it creates picturesque scenery, and in places it has formed natural pools, or stone "lam" basins, which are very popular with visitors. On both sides of the river there are good spots for resting, picnicking and enjoying nature. Maple, alder, oak and other Hyrcanian forest trees create a calm, pleasant setting for nature tourism. The forest road leading to Javaherdasht, with its lush views and many rivers, is also considered one of the most beautiful tourist routes in the region.

To reach the Doab recreation area, take the Javaherdasht road in the Siahkalrud area off the Rudsar–Chaboksar road. The recreation area lies after the villages of Chaykhansar and Kol-Mahalleh and before Doab Waterfall. The best time to visit is from mid-spring to the end of summer, when the river is at its coolest and the shade of the forest trees makes it a pleasant place to rest. When visiting, it is essential to practice responsible nature tourism: collect your trash, avoid damaging the vegetation and do not light fires in sensitive forest areas, so that this pristine environment is preserved for future generations.