Here are polished options based on your inputs:

Suggested title:
– Huntsville’s Seasonal Events Calendar: What’s Happening This Fall

Suggested synopsis:
– This monthly events calendar highlights fall happenings in Huntsville and surrounding areas, featuring hikes, festivals, immersive experiences, and volunteer nature activities. Plan your season with family-friendly hikes, community festivals, and opportunities to give back to the outdoors through conservation and invasive species removal.

If you’d like, I can tailor a version for a specific platform (blog, newsletter, or social media) or format it as a concise weekly/monthly calendar.