A Gruta dos Moinhos Velhos (juntamente com a Gruta da Pena e a Gruta da Contenda), faz parte de uma grande rede de galerias com mais de 11 Km de extensão, constituindo dos mais importantes sistemas subterrâneos do Maciço Calcário Estremenho. Caracteriza-se pela existência de dois coletores paragenéticos fósseis, de diâmetro aproximadamente decamétrico, com afluentes desenhando uma rede dendrítica e um conjunto de galerias semi-ativas de traçado dendrítico a norte e angulado a sul. A zona fóssil tem um desnível de 100 metros e a espessura da zona intermédia varia entre 80 metros a montante e 60 metros a jusante, circulando a água por galerias singenéticas, do quadrante norte para o quadrante sul, em direção à exsurgência da Gruta da Pena.

Podem definir-se quatro fases na evolução do sistema. A primeira é representada por galerias freáticas superficiais, de pequeno diâmetro, a segunda pelo coletor paragenético da Galeria Gémea, a terceira pela Galeria Grande e seus afluentes e a última pelas galerias ativas e semi-ativas dos andares inferiores.

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Farmstay in Porto de Mos

"Good eco friendly hotel. Close to great beaches and Obidos"

AED 742 total

includes taxes & fees

20 Jul - 21 Jul

"Amazing hosts / staff and a beautiful property to relax at."

AED 651 total

includes taxes & fees

20 Jul - 21 Jul

Seasonal outdoor pool, open 7:30 AM to 10:00 PM, sun loungers

AED 516 total

includes taxes & fees

24 Jul - 25 Jul

"Beautiful property with all amenities, swimming pool, bbq, table footbal, ping pong. I celebrated my birthday with friends and we had an amazing time. Thanks again to Francisca and Carminda for all the communication and availability."

"Beautiful, old, country farm that has been renovated and converted into a few private casitas that are fully appointed with anything one could need. The hosts could not be any more welcoming and gracious."

"Spacious and cozy, this farmhouse had everything we needed for our trip, The fireplace added a nice touch on cooler evenings, and the outdoor shower was super convenient after swimming, Highly recommend!"

"It was nice to be away from the city but close to the beach, restaurants, grocery stores and many nearby towns to explore. The owners were very personable and helpful. We were given a list of delicious, favorite restaurants. We very much enjoyed our stay here!"