Dehri is a city located in the Rohtas district of the Indian state of Bihar. It is situated on the banks of the Son River and is known for its historical and cultural significance. The city is a major industrial and commercial hub, with a thriving economy driven by industries such as cement, power generation, and agriculture. Dehri is also home to several historical landmarks and tourist attractions, including the Rohtasgarh Fort, which dates back to the 7th century and is a popular destination for history enthusiasts. The city is also known for its vibrant festivals and cultural events, which showcase the rich heritage and traditions of the region.