Halasi is one of the most important spiritual destinations for all Hindus and Buddhists which is not totally explored for tourist but it is very famous destination for locals which is the most ancient and holiest places of Nepal, it is very popular as the Pashupatinath of the eastern Nepal. Halesi Mahadev is situated at the hilly region of the country in between the holy rivers Dudh Koshi to the right and Sunkoshi to the left. The temple is situated at the top of a small hill inside a beautiful cave. There lie other numerous small beautiful caves too. Importance. Here, the image of the god is inside the cave, which is full of natural beauty. Inside the cave is dark and there are bats flying here and there. It is also a kind of pride for the people living there, as it is as famous as other temples like the Pashupatinath, the Lumbini etc. even internationally. It is the natural cave, which lies in 4th remote hilly region and is believed to be in existence since 6000 years. It is the place full of natural beauty and cultural inheritance.
There are three mysterious caves, which are believed to be the three eyes of lord Shiva as we see in the first cave, we see an image of lord Shiva which is called as Haleshwar Mahadev. In the second cave there is an image of Nandi. Halesi temple is situated in the Khotang district of eastern Nepal. This is a small hilly area full of natural beauty. The location of the place itself is beautiful. One the other hand, the beautiful and mysterious natural caves; full of different natural images, look as if the stone carving artist have done it carefully taking a lot of time. Here, the images are all inside the caves which themselves are mysterious.
According to Buddhism it is power-place generally associated with Guru Padmasambhava (Guru Rinpoche), where he and his consort Mandarava were blessed with immortal life by Buddha Amitayus. The caves of Maratika are mentioned in Tibetan literature up from the 12th century. The ‘Sanglingma’, a Kathang (biography) of Padmasambhava discovered by Nyang Ral Nyima Öser, describes the original event, which made the Maratika caves a sacred place for Buddhists: