Raja Karna-ka-Kila also known as Raj Karna Dharia Ka Kilais an ancient site, located about 5 km south-west of Thanesar. This fort of the ancient King Karna is now completely ruined. The fort today is just a mass of rough stones and is the remains of the palace and temples. It is believed to be the site of Karna s military camp from where he surveyed his army during the war. The mound is about 30 to 40 feet high and is triangular in shape. The area on top is about 500 square feet and at the base is about 800 square feet. It is believed to date back to the pre-Buddhist period. The excavations found here were pots of the Muslim period, shoulder ornament, a pot with a line of ‘trisula’ and wheel carved, remains of painted grey ware, terra-cota reel, a mould for printing cloth, ink pot, etc.

The mound does not look colorful and very attractive at the first look but is a real treat to the eyes of historical and archeological site lovers. One can spend hours glaring at the broken rocks that are years old, wondering at the architectural knowledge of the people of that era.

The beautifully carved Riwa gateway was discovered at this site. The mound at an earlier date was the site of the buildings that were situated to the south-west of Kasaumbi, as mentioned by the Chinese traveler Yuan Chwang.

To the south-west of this mound of ruins, more than a mile away, there is a solitary hill called Goragad that acted as a hub to the neighboring rulers.

The kila of Raja Karna is a massive mound structure, spanning about 5 km from Thanesar, towards the approximate southwest of it, in Kurukshetra. The general level of the ground sees the mound 10 m high above it. During the built up, there were excavations carried out, in which was revealed a three- fold sequence of historical importance. There were quite a lot of excavation and findings done in the kila of Raja Karna, since the time when the fort was left abandoned after the last ruler passed away. According to the findings, there are periods named after the consequent phases of excavations – period 1, period 2 and period 3. Period 1 finds that the mound of the kila of Raja Karna seems to be belonging to the 4th century BC, and served as the occupational center for them. Periods 2 marked the occurrence of metal and earthen ware, and the scripting of various languages, like Brahmi, and writing legend using it. Period 3 is known to have witnessed the use of lakhauri bricks and glazed ware in the pre- Mughal times. Plastering of the bricks with lime and using them was also signified in this period.

About 200 m away from the main mound, there’s another mound that revealed the habitations of the protohistoric living, which belonged to the later Harappan civilization. This mound brought to sight a 1 – 1.5 m thick soil topped complex structure of mud – bricks. This structure consisted of twin rooms with no roofs. A bigger room consisted of a refuge pit, a fire place, a corn bin, and an oven. Small rooms were squared and possessed a tiny entrance door in the southeastern wall. The bricks that have been used in the structures are about 400x20x10 cm in size. Crystal, agate, jasper, carnelian, steatite, etc. were found to have been used to make beaded architectures in the fort and the protohistoric civilization.

One who wishes to visit the kila of Raja Karna in Haryana, can have Chandigarh as the nearest airport, Kurukshetra as the nearest railway head, and for those who choose to travel by road, the state offers a bus stop at Kurukshetra from where buses fetch you to drop by the fort.