The Government of Tamil Nadu has announced the State’s first Dark Sky Park at the Ariyur Shola Reserve Forest in Kolli Hills, Namakkal district. This marks Tamil Nadu’s first dark sky initiative, following India’s first such initiative at Hanle.
India’s first dark sky initiative was established at Hanle Dark Sky Reserve, centred around the Indian Astronomical Observatory.
What is a Dark Sky Park?
A Dark Sky Park is a protected landscape with minimal artificial light pollution, allowing clear observation of celestial bodies such as:
- Moon
- Stars
- Planets
- Deep-sky objects
These parks promote astronomy, scientific awareness, and eco-tourism while preserving natural night skies.
Why Kolli Hills?
Kolli Hills was selected because of:
- High altitude terrain
- Dense forest cover
- Low urban light interference
- Natural geographical shielding
- Nearly 1.5 km radius free from artificial light
The elevated terrain and surrounding reserve forest act as natural barriers against external light pollution, ensuring optimal dark-sky conditions.
Project Details
| Feature | Details |
| Location | Ariyur Shola Reserve Forest, Kolli Hills |
| District | Namakkal, Tamil Nadu |
| Project Announcement | June 25, 2024 (Legislative Assembly) |
| Cost | ₹1 crore |
| Operational Period | January 15 – June 15 |
| Closed During | Monsoon season |
| Clear Sky Availability | Nearly 6 months annually |
Facilities at the Dark Sky Park
- Three advanced telescopes for structured sky-watching sessions
- Solar panels for sustainable power supply
- Daytime astronomy awareness programmes
- Accommodation at Agaya Gangai eco-huts
- Watchtower located 20 metres from site
- CCTV monitoring for security
- Forest frontline staff stationed during night hours
- Two Eco-Development Committee (EDC) members deployed for assistance
Activities Offered
- Regular structured stargazing sessions
- Whole-night stargazing camps (2–3 times per month)
- Special observation sessions during major astronomical events
- Optimal viewing during new moon phases
- Non-overnight participation options available
The facility also promotes scientific literacy among students, researchers, and the public.
Safety & Monitoring
- One forest staff member stationed at night
- Additional personnel deployed if required
- CCTV cameras installed
- Community involvement through EDC members
Types of International Dark Sky Places (IDSPs)
Recognised by the International Dark-Sky Association:
| Category | Description | Example |
| International Dark Sky Parks | Protected areas with strict lighting policies and public access | Pench (Maharashtra), Kolli Hills |
| Dark Sky Reserves | Core + buffer area with community participation | Hanle (Ladakh) |
| International Dark Sky Sanctuaries | Remote, extremely dark areas with fragile ecosystems | Various global locations |
Significance of Initiative
- Promotes astro-tourism in Tamil Nadu.
- Encourages scientific awareness and astronomy education.
- Preserves ecological integrity of night skies.
- Integrates renewable energy through solar power usage.
- Boosts eco-tourism and local livelihoods.
- Aligns conservation with sustainable tourism models.