At 10:03:11, near Indian Lake and Shanksville, Pennsylvania, the plane crashed into a field near a reclaimed coal strip mine known as the Diamond T. Mine owned by PBS Coals in Stonycreek Township in Somerset County.
The National Transportation Safety Board reported that the flight impacted at 563 mph (906 km/h, 252 m/s, or 489 knots) at a 40-degree nose-down, inverted attitude.
The impact left a crater eight to ten feet deep (c. 3 m), and 30 to 50 feet wide (c. 12 m).
Everyone on board died.
Many media reports and eyewitness accounts said the time of the crash was 10:06 or 10:10; an initial analysis of seismographic data in the area concluded that the crash occurred at 10:06, but the 9/11 Commission report states that this analysis was not definitive and was retracted.
Other media outlets and the 9/11 Commission reported the time of impact as 10:03, based on when the flight recorders stopped, analysis of radar data, infrared satellite data, and air traffic control transmissions.
Wikipedia


A boulder was placed at the site where the actual impact of the plane occurred.
This area is considered sacred ground and visitors to the site are forbidden to walk in the field.