Thank you for your understanding. If Harmony Hall Green is a new or lesser-known location or establishment, I recommend following the steps I mentioned earlier to gather more information:

1. **Local Sources:** Check with local residents, businesses, or organizations in the area where Harmony Hall Green is located. Local news outlets or community websites might have information or updates about it.

2. **Official Websites:** Look for any official websites or online presence associated with Harmony Hall Green. If it's a park, community center, or organization, they may have a website or social media profiles where they share information and updates.

3. **Social Media:** Search for Harmony Hall Green on social media platforms like Facebook, Twitter, Instagram, and others. Many places and organizations maintain active social media accounts to communicate with the public.

4. **Online Forums and Communities:** Consider checking local or regional Harmony Hall Green online forums, discussion boards, or community groups. Residents and visitors often share information and experiences about local places and events in such online communities.

5. **Contact Local Authorities:** If it's a government-run facility or park, you can contact local government or municipal offices to inquire about Harmony Hall Green.

6. **Visit in Person:** If possible, visit Harmony Hall Green in person and look for any posted information, brochures, or signage that might provide details about the location.

By utilizing these methods, you should be able to gather more information about Harmony Hall Green or any recent developments associated with it. If you have specific questions or need assistance with particular aspects of Harmony Hall Green, please provide more context, and I'll do my best to assist you further.