Karnala fort actually consists of two forts one at a higher level and other lower.
At the centre of the higher level is a 125 feet high basalt pillar.
It is also called Pandu's tower.
This structure was used as watchtower when the fort was occupied however now it is in a ruined condition.
The presence of bee hives also makes it difficult to climb and have resulted in at least one casualty in recent times.
There is a water cistern which provides fresh water all year long.
From the top the forts of Prabalgad, Manikgad, Haji Malang, Chanderi fort, Matheran, Sankshi fort, Dronagiri fort, and Rajmachi are clearly  visible.

The fort has two inscriptions one in Marathi and the other in Persian.
The Marathi inscription which has no date is seen on the lower gate on the inner side.
Its words are indecipherable.
The Persian writing is on upper gate reads "Syed Nuruddin Muhammad Khan, Hijri, 1147 AH (1735 CE)" and probably dates from the Mughal occupation of the fort.
This rock cut inscription has been removed by some miscreants long back.

Bhavani Temple
There is a temple  dedicated to goddess Bhavani located at the bottom of the fort.
It is said that the goddess gave a sword to king Shivaji, which he then used to conquer a vast area of land for the establishment of a Hindu nation.
Karnala fort actually consists of two forts one at a higher level and other lower. At the centre of the higher level is a 125 feet high basalt pillar. It is also called Pandu's tower. This structure was used as watchtower when the fort was occupied however now it is in a ruined condition. The presence of bee hives also makes it difficult to climb and have resulted in at least one casualty in recent times. There is a water cistern which provides fresh water all year long. From the top the forts of Prabalgad, Manikgad, Haji Malang, Chanderi fort, Matheran, Sankshi fort, Dronagiri fort, and Rajmachi are clearly  visible.
The fort has two inscriptions one in Marathi and the other in Persian. The Marathi inscription which has no date is seen on the lower gate on the inner side. Its words are indecipherable. The Persian writing is on upper gate reads "Syed Nuruddin Muhammad Khan, Hijri, 1147 AH (1735 CE)" and probably dates from the Mughal occupation of the fort. This rock cut inscription has been removed by some miscreants long back.
Bhavani Temple
There is a temple  dedicated to goddess Bhavani located at the bottom of the fort. It is said that the goddess gave a sword to king Shivaji, which he then used to conquer a vast area of land for the establishment of a Hindu nation.
Karnala Fort