Physical geography Ribeirinha lies within two morphological formations, the ancient
Ribeirinha Volcanic Complex, and the more recent
Pedro Miguel Graben structure. The ancient Ribeirinha Volcanic Complex includes lava flows intermixed with heavily altered pyroclastic deposits and, in the western part of the parish, covered in pumice and ash from more recent volcanic events produced by the central volcano. Although there exist no volcanic structures, the region is vulnerable to the products from any central eruption on the island and peaks, such as
Tambroso. The parish is crossed by important geological faults:
Chã da Crus Fault (reactivated during the 9 July 1998 earthquake), the
Ribeirinha-Espalhaftos Fault and the
Carapeto Fault oriented along a north-northwest to south-southeast alignment. Gaspar et al. (1998) consider the possibility of a structural fault, aligned northeast to southwest coincident with the Ribeirinha-Espalhafatos Fault that occurred during the 1998 earthquake.
Human geography The community itself is divided into areas located within the Ribeirinha river-valley, and portions that are situated on several mountains and escarpments overlooking the same: Ribeirinha and Espalhafatos. Administratively, Riberinha is divided by borders along
Lomba Grande (543 metres) and
Lomba da Ribeira (209 metres) oriented west to east (both covered with many endemic species of plants, shrubs and trees natural to the Azores). Towards the interior, the plateau
Trás-da-Serra is a feature of volcanic origins, as well as a protected countryside comprising many farmlands and diverse natural views. The sheltered port of Boca da Ribeira is one of the oldest fishing ports found in the northernmost point of the
Faial Channel. On 22 March 2012, a private day centre for seniors was inaugurated, to support a maximum of 30 people in the community of Espalhafatos, an area with access to both northern and eastern residents. Built in order to meet the local needs and remove seniors' dependency, the building was opened by
Optimus Senium, a local company that took advantage of a vacated restaurant in order to provide meals, transport of the elderly, care and comfort, medical support, nursing and physiotherapic care, as well as stimulating activities of a socio-cultural and psycho-social nature. ==Architecture==