Best natural monuments in Allegheny County include a variety of parks, green spaces, and natural features within a diverse landscape. The region is characterized by woodlands, rivers, and rolling hills, offering numerous outdoor exploration opportunities. These areas provide natural elements such as waterfalls, extensive trail systems, and serene lakes. Allegheny County's natural spaces serve as vital reserves for diverse flora and fauna, contributing to the area's ecological richness.
Last updated: July 8, 2026
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Popular around Allegheny County
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This is a good place to take a break on a hot day, as the waterfall produces cold wind. DO NOT DRINK this water, It is from an acid mine and the red-orange color comes from iron and rust.
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S THE WATERFALL Demonstrating acid mnine drainage The water here is acid and iron-rich, coming up to the surface from underground mines, stairung the-rocks ruspred. Acid mine drainage (AMID) is a major source of water pollution. Cause of extensive stream environmental damage. The Ocean Coal Company, a subsidiaries of Bevind- White Coal Company Philadelphia, PA, esaiblished several mines in this region including, in 1900, Ocean No. 2. It is purported that drainage from ocean No. 2 is the chief cause of the Red Waterfall Why is it acidic and full of iron? Hundreds of millions of years ago, the massive Pittsburgh Coal Seam formed underneath parts of Pennsylvania, West Virginia, and Ohiờ from ancient swamp plants. Sand, silts, shells, and other -matter were deposited and made a rock seal over the carbon-rich vegetation, This rock contained the mineral "pyrite," made of iron and sulfur Coal mining exposes pyrite to oxygen and ground water causing the formation of sulfuric acid and a number of red, orange, and yellow compound s. AMD occurs when this mine water seeps, or in this-case, bursts out into Streams. The yellow sulfur can be seen in the shale near coal seams. GRESCHIN DASSAGE SPONSORED BY: Southwestern PA Heritage Breservation- Commission Allegheny Trail Alliances Regional Trail Corpofation For moterinformation. www.gaptrail.org
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The Red Waterfall is one of the main highlights on the GAP between West Newton and McKeesport. The falls gets its name from the water that has been colored red by nearby underground coal mines, which has made the water acidic and iron-rich water.
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Beautiful hiking trail to try out with a small waterfall and very easy walking.
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Emerald View Park, created in 2005 and designated a regional park in 2007, has transformed significantly from its past. In the mid-1700s, Mount Washington was heavily mined for bituminous coal, earning it the name "Coal Hill." After years of neglect and illegal dumping, efforts began to restore the area. Today, the park offers winding trails, wooded hills, and scenic viewpoints, picnic areas, and historic sandstone steps and walls from the Depression era.
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The impressive fountain boasts a 200-foot-wide basin with an infinity waterfall, situated at the confluence of the Monongahela and Allegheny rivers that come together to form the Ohio River, which eventually flows into the Mississippi. There are plenty of seating areas, making it an ideal spot to stop, enjoy the views and take some memorable photos.
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Allegheny County offers a diverse range of natural features, including impressive waterfalls, serene lakes, and extensive woodlands. You can find the distinctive Red Waterfall, known for its iron-rich, red-orange water, or the picturesque Settler’s Cabin Waterfall. The region also boasts tranquil spots like Pinkertons Run Pond and the expansive woodlands of Frick Park and Girty's Woods.
Yes, many natural areas in Allegheny County are suitable for families. Settler’s Cabin Waterfall offers an easy hiking trail to a picturesque waterfall, with picnic tables nearby. Frick Park provides extensive woodlands and trails for all ages, while Deer Lakes Park features three stocked lakes perfect for fishing and walking. Great Allegheny Passage Trailhead – Point State Park is also family-friendly and wheelchair accessible.
For scenic viewpoints, consider Great Allegheny Passage Trailhead – Point State Park, which offers stunning views at the confluence of the Allegheny and Monongahela Rivers. Girty's Woods provides partial views of downtown Pittsburgh from certain points, and Frick Park's varied terrain includes spots with expansive woodland vistas. Emerald View Park also offers great views.
Allegheny County features a variety of hiking trails. Fall Run Park has a roughly one-mile nature trail leading to Fall Run Falls. Frick Park offers numerous trails through mature woodlands and steep ravines. Girty's Woods provides a more rugged hiking experience, while South Park has miles of trails across rolling hills. For more options, explore the running trails in Allegheny County, many of which are also suitable for hiking.
Absolutely. The Great Allegheny Passage Trailhead – Point State Park is a significant starting point for the Great Allegheny Passage trail, popular with cyclists. You can find various cycling routes, including gravel and road cycling options, throughout the county. For detailed routes, check out the cycling guide for Allegheny County or the road cycling routes guide.
The Great Allegheny Passage Trailhead – Point State Park is noted as wheelchair accessible, offering a great experience at the confluence of the rivers. While many natural trails may have varied terrain, Point State Park provides an accessible option to enjoy the natural beauty and river views.
Allegheny County's natural monuments can be enjoyed year-round, with each season offering a unique experience. Spring brings lush greenery and blooming wildflowers, while autumn showcases vibrant fall foliage. Summer is ideal for longer hikes and water activities, and after heavy rain, waterfalls like Fall Run Falls are particularly impressive. Winter offers a quiet, serene landscape for those who enjoy colder weather activities.
Yes, Allegheny County's parks are vital nature reserves. Frick Park, for instance, is home to over 100 species of birds, owls, amphibians, wild turkeys, and foxes. Deer Lakes Park and South Park also support diverse wildlife habitats. Keep an eye out for various flora and fauna, especially in the more secluded wooded areas and near water bodies like Pinkertons Run Pond.
While many sites are primarily natural, some integrate historical elements. The Great Allegheny Passage Trailhead – Point State Park is a historical site at the location of an old fort. South Park's Cascades were built in the late 1920s using local stone, adding a historical touch to a natural feature. Westinghouse Memorial, while man-made, is set within a natural park with a lake and is categorized as a natural monument.
Beyond the more popular parks, consider exploring Girty's Woods, a 155-acre protected green space with rugged trails and partial views of downtown Pittsburgh. Fall Run Falls in Shaler Township offers a beautiful 18-foot waterfall that's the largest near downtown Pittsburgh, providing an accessible escape into nature.
Many parks and natural areas in Allegheny County welcome dogs, typically on leash. Emerald View Park is specifically listed as dog-friendly, offering trails and green space for you and your canine companion. Always check specific park regulations before visiting to ensure a pleasant experience for everyone.
Allegheny County's natural areas feature diverse woodlands. Frick Park is known for its extensive mature woodlands, steep ravines, and valley floors. Hartwood Acres Park boasts groves of hemlocks and pines, mixed hardwood forests, and beautiful wildflower meadows. Girty's Woods offers recovering woodlands with steep slopes, providing varied forest experiences.


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