page_title: Wetmore Township, McKean County, Pennsylvania
hierarchical_section_title: Wetmore Township, McKean County, Pennsylvania
caption_attribution_description: Betula alleghaniensis — Yellow birch, old-growth fallen tree. Within the Tionesta Research Natural Area of Allegheny National Forest, in Wetmore Township, McKean County, Pennsylvania. The exposed, stilted roots have grown from the stump of long-ago fallen tree. Remote and difficult to access, the research area protects an old-growth forest of hemlocks, white pines, and northern hardwoods. It and the adjacent Tionesta Scenic Area form one of the largest tracts of old-growth forest east of the Mississippi River. The forest has had its share of disturbances--deer overbrowsing, encroachment from oil and natural-gas drilling, and the destructive May 1985 tornado. The hemlock woolly adelgid has not yet been detected here; however, beech bark disease has killed many trees. "Despite the disturbances, the forest is magnificent. It was late in the day when I visited, and I had time to explore only a small portion of the forest. Will make a return trip."
context_page_description: Wetmore Township is a township in McKean County, Pennsylvania, United States.
context_section_description: Wetmore Township is a township in McKean County, Pennsylvania, United States.
caption: Old-growth birch within the Allegheny National Forest in the township
exif: {"Image ImageDescription": "GEDSC DIGITAL CAMERA", "Image Make": "GENERAL IMAGING CO.", "Image Model": "X5", "Image Orientation": "Horizontal (normal)", "Image XResolution": "72", "Image YResolution": "72", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "Adobe Photoshop Elements 7.0 Windows", "Image DateTime": "2011:06:12 17:35:46", "Image YCbCrPositioning": "Co-sited", "Image PrintIM": "[80, 114, 105, 110, 116, 73, 77, 0, 48, 50, 53, 48, 0, 0, 2, 0, 2, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0]", "Image Padding": "[]", "Image ExifOffset": "2372", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "72", "Thumbnail YResolution": "72", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "5082", "Thumbnail JPEGInterchangeFormatLength": "10240", "EXIF ExposureTime": "7/5", "EXIF FNumber": "73/10", "EXIF ExposureProgram": "Program Normal", "EXIF ISOSpeedRatings": "80", "EXIF ExifVersion": "0220", "EXIF DateTimeOriginal": "2011:06:11 19:28:04", "EXIF DateTimeDigitized": "2011:06:11 19:28:04", "EXIF ComponentsConfiguration": "YCbCr", "EXIF ShutterSpeedValue": "-51/100", "EXIF ApertureValue": "57/10", "EXIF ExposureBiasValue": "0", "EXIF MaxApertureValue": "317/100", "EXIF MeteringMode": "Average", "EXIF LightSource": "Shade", "EXIF Flash": "Flash did not fire, compulsory flash mode", "EXIF FocalLength": "49/10", "EXIF FlashPixVersion": "0100", "EXIF ColorSpace": "sRGB", "EXIF ExifImageWidth": "3240", "EXIF ExifImageLength": "3873", "Interoperability InteroperabilityVersion": "[48, 49, 48, 48]", "EXIF InteroperabilityOffset": "4968", "EXIF FocalPlaneXResolution": "6129", "EXIF FocalPlaneYResolution": "6129", "EXIF SensingMethod": "One-chip color area", "EXIF FileSource": "Digital Camera", "EXIF CustomRendered": "Custom", "EXIF ExposureMode": "Auto Exposure", "EXIF WhiteBalance": "Manual", "EXIF DigitalZoomRatio": "0", "EXIF SceneCaptureType": "Standard", "EXIF GainControl": "None", "EXIF Tag 0xA40D": "0", "EXIF Padding": "[]", "EXIF OffsetSchema": "4128"}