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Back in early-mid October, before the Letchworth glamping trip, the SO and I went hiking at Green Lakes State Park in Fayetteville, NY.

I hadn’t posted about this one yet due to time constraints, but it kind of worked out, with me being busy with the move right now.

Green Lakes State Park – Fayetteville, NY hiking vlog on YouTube

It’s one of those busier parks, so I’m glad we waited to go until October.

Green Lakes State Park trail map sign
Green Lakes State Park trail map

There are two lakes in this park – Green Lake and Round Lake.

Ducks swimming in green lake - green lakes state park in Fayetteville, NY - cny nature cny hiking
ducks swimming in Green Lake

The water is SO CLEAR! It not only reflects everything above the surface beautifully, you can also see the growing reefs below!

Round Lake at Green Lakes State Park in Fayetteville, NY - growing freshwater reefs - cny hiking trails
my favorite view of Round Lake

I can’t get over how gorgeous it is!

Kae Audhild selfie Round Lake at Green Lakes State Park in Fayetteville, NY - autumn hiking - cny trails
obligatory selfie with Round Lake

Recommended: Goodr Pop G sunglasses – New Wave Renegade

Recommended: Carhartt men’s black waffle knit beanie

Round Lake info sign - Green Lakes State Park in Fayetteville, NY - cny hiking
Round Lake info sign

I love how the autumn foliage surrounding Round Lake glows when the sun hits it just right.

Deadman's Point info sign - Green Lakes State Park in Fayetteville, NY - freshwater reefs in central New York
Deadman’s Point, with info sign

Want to know more about the reefs? (There are multiple, but let’s focus on the big obvious one.)

[From Google] The freshwater reef at Green Lakes State Park is a unique geological formation located at Deadman’s Point that is built by microscopic organisms called cyanobacteria. These organisms precipitate calcium carbonate from the lake’s water, creating a living limestone structure that also provides a habitat for other rare organisms like sponges and mosses. Visitors are asked not to walk on or disturb the reef, as it is fragile and being harmed by human activity. 

Reef characteristics

  • Formation: The reef is a living, growing structure formed over thousands of years by cyanobacteria and other microbes that precipitate calcium carbonate from the lake’s water.
  • Location: The most prominent reef is at Deadman’s Point, but similar structures can be seen at other points around the lake’s shoreline.
  • Unique ecosystem: The reef’s ledges and caves are home to rare sponges and mosses that provide shelter for fish and other animals.
  • Habitat: The reef provides a substrate for aquatic plants and is an important part of the lake’s ecosystem. 

Visitor information

  • Stay off the reef: Visitors are prohibited from walking on the reef, as this can cause long-term damage to this fragile formation.
  • Respect signage: Please follow all posted signs and rules, which are in place to protect this unique natural wonder.
  • How to observe: You can view the reef from designated areas, and the water’s clarity allows for good visibility of the formations from a safe distance. 

Awesome, right?!

It’s amazing how we have so many diverse ecosystems in the state of New York.

10 responses to “Green Lakes State Park – Fayetteville, NY”

  1. klh048 Avatar

    Amazing. I’ve never heard of the reef bacteria. How interesting.

    Like

  2. Gratitude #25 – October 2025 – Oh, Kae. Avatar

    […] Lake at Green Lakes State Park in Fayetteville, […]

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    1. Eda'-Osiri of the Eastern Board Avatar

      I like your blog page and how it organised. I also like how you provide links and photos as well as videos to enhance the experience for a reader to your blog page.

      Like

  3. Hazel Avatar

    Like the Philippines, I love rural places in America. It’s stunning. I enjoyed the vlog, Kae

    Like

  4. Frugal Fish Avatar

    Thank you for sharing about the lakes! I loved on the edge of Adirondack Park for 10 years. It brought back many memories. I miss the clear water and the trees in the fall.

    Thank for liking my post.

    Like

  5. donnarmaurillo Avatar

    Whenever I’m in Syracuse, where I grew up, I like to visit Green Lake. It is so rare to have this type of meromictic lake… only one in every 1000 lakes has this quality, wherein the upper and lower layers don’t mix. This is why motorboats are not permitted… only small electric motors… so the ripples don’t force the layers to intermingle. The sheer aqua color is breathtaking, and all my photographs have never adequately captured the wonder of this lake. It is absolutely one of my favorites. Ever.

    My sister and I have hiked around it, and I’ve stopped often at Deadman’s Reef. It’s a puzzle why some people insist on walking on the reef, despite signs telling people not to do that.

    Oddly, in the same county where this lake is located, Onondaga Lake makes the list of the nation’s most polluted lakes. Chemical plants used to be situated on the shore, spilling their sewage of heavy metals into the water, killing the fish, and producing a foul odor. Swimming and fishing were prohibited because of the pollution. With the chemical plants long gone, the lake has undergone significant restoration. However, pockets of oily sludge settled to the bottom in some areas, meaning that the lake may never be remedied.

    Like

  6. wiseforward Avatar

    So beautiful, it echos…..Thank you for posting this. I am on the other side of the World, so this is a treat!
    Thank you also for liking my post!

    Like

  7. Braden Avatar

    You capture such beautiful photos! LOOOVVEEE this!

    Like

  8. Gratitude #26 – November 2025 – Oh, Kae. Avatar

    […] posting that content from Green Lakes State Park in Fayetteville, […]

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  9. Steve Anderson Avatar

    Brings back fond memories – I grew up swimming and camping at Green Lakes, and in my later life – hiking there. Thanks for sharing!

    Liked by 1 person

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