Sirmaur is the most south-eastern district of Himachal Pradesh, India. It is largely mountainous and rural, with 90% of its population living in villages.
The area is popular with tourists, particularly those on pilgrimages. It includes the towns of Nahan (its capital), Sarahan and Paonta Sahib, as well as the Shivalik Fossil Park at Saketi, where fossils of over 85 million years old have been found. This district has a common border with Uttarakhand.
Source : Wikipedia
