page_title: List of karst areas
section_title: Portugal
hierarchical_section_title: List of karst areas / Europe / Portugal
caption_attribution_description: Português: O Polje de Mira-Minde inundado — Parque Natural das Serras de Aire e Candeeiros, Portugal.
context_page_description: Karst topography is a geological formation shaped by the dissolution of a layer or layers of soluble bedrock, usually carbonate rock such as limestone or dolomite, but also in gypsum. It has also been documented for weathering-resistant rocks, such as quartzite, given the right conditions. This is an incomplete list of the major karst landscape areas of the world.
context_section_description: Natural Park Serras d'Aire and Candeeiros
caption: "Mira d'Aire"'s Karst Lake, Portugal
exif: {"Image Make": "CASIO", "Image Model": "QV-3000EX", "Image Orientation": "Horizontal (normal)", "Image XResolution": "72", "Image YResolution": "72", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "Ver1.002", "Image DateTime": "2001:04:12 08:59:48", "Image YCbCrPositioning": "Centered", "Image ExifOffset": "2282", "Image Padding": "[]", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "1/96", "Thumbnail YResolution": "1/96", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "5070", "Thumbnail JPEGInterchangeFormatLength": "6205", "EXIF ExposureTime": "10000/2873563", "EXIF FNumber": "28/5", "EXIF ExposureProgram": "Program Normal", "EXIF ExifVersion": "0210", "EXIF DateTimeOriginal": "2001:04:12 08:59:48", "EXIF DateTimeDigitized": "2001:04:12 08:59:48", "EXIF ComponentsConfiguration": "YCbCr", "EXIF CompressedBitsPerPixel": "175/48", "EXIF ExposureBiasValue": "0", "EXIF MaxApertureValue": "2", "EXIF MeteringMode": "Pattern", "EXIF Flash": "Flash did not fire", "EXIF FocalLength": "713/100", "EXIF FlashPixVersion": "0100", "EXIF ColorSpace": "sRGB", "EXIF ExifImageWidth": "2048", "EXIF ExifImageLength": "1536", "Interoperability InteroperabilityIndex": "R98", "Interoperability InteroperabilityVersion": "[48, 49, 48, 48]", "EXIF InteroperabilityOffset": "4946", "EXIF FileSource": "Digital Camera", "EXIF Padding": "[]", "EXIF OffsetSchema": "4156"}