title: Geological patterns in the collapse of certain rock sanctuaries of Spain creator: Sáenz Sanz, Clemente subject: Geology description: Descripción de ciertos rasgos geológicos que amenazan el patrimonio religioso rupestre español. Rock sanctuaries are a historical heritage not as well-known as other religious constructions, due to their usual recondite location and abandoned condition. Spain has a large number of examples, mostly excavated during the Early Middle Age or even before. Fortunately, some of them are used on present worship, but the majority of these ancient shrines have suffered of severe damage through time, mostly due to common geological patterns. Some others threaten to collapse soon unless urgent remedial improvement is applied. Some examples at different locations are shown, reviewing their problems, which involve weathering, major rock cracks, soft rock pillars and others related to the defective site where they were located. publisher: E.T.S.I. Caminos, Canales y Puertos (UPM) rights: https://creativecommons.org/licenses/by-nc-nd/3.0/es/ date: 2007 type: info:eu-repo/semantics/conferenceObject type: Presentation at Congress or Conference source: Preservation of Natural Stone and Rock Weathering: Proceedings of the ISRM Workshop W3, Madrid, Spain, 14 July 2007 | Preservation of Natural Stone and Rock Weathering, ISRM Workshop W3 | 12/07/2007 - 15/07/2007 | Mérida-Madrid type: PeerReviewed format: application/pdf language: eng relation: http://www.tilesa.es/isrm2007w3/organization.htm rights: info:eu-repo/semantics/restrictedAccess identifier: https://oa.upm.es/22785/