About 4 km along the gorge is the Tang-e-Chogan and its 7 m-high Statue of Shapur I, one of the most impressive archaeological sites in Iran. Getting to the cave is easiest if you’re in a car, but you could walk to it from the small village of Shapur, itself a 30-minute walk from the main road. The ascent to the cave is steep, so you’ll need to wear good shoes, take water and start very early in summer. The round trip from the village to the cave takes at least three hours.