アレゲーニー郡の天然記念物・トップ7

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.

If You need water, don't count on public water fountains in Pittsburgh because they barely ever get turned on.

This is where the Allegheny River and the Monongahela River meat to form the Ohio River.

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

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.

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.

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.

Hays Woods sprawls over 660 acres of pristine woodland, valleys, and creeks at the southeast edge of Pittsburgh, adjacent to Hazelwood across the Monongahela River. It represents the largest new urban park initiative undertaken east of the Mississippi River in 75 years. Historically utilized for industrial purposes like coal mining, Hays Woods owes its preservation to community advocacy and public backing. Despite its ecological challenges, visitors marvel at its natural beauty, including stunning vistas of downtown and Hazelwood, a nesting ground for bald eagles for over 30 years, and countless hidden treasures. However, be mindful that during the summer months, the trails may become slightly overgrown deeper into the woods.