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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"Beautiful hotel, ideal location "

Daily continental breakfast (EUR 12.50 per person)

"Great place to be if you are looking for convenience and simplicity in the heart of town."

SAR 188 total

includes taxes & fees

27 Jul - 28 Jul

"The location is unique directly on the 2,2km wide beach"

SAR 484 total

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27 Jul - 28 Jul

"Good hotel"

SAR 504 total

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28 Jul - 29 Jul

1 bedroom, minibar, in-room safe, individually decorated

"Had a wonderful stay, everything exceptionally clean, the staff was very nice and helpful. Would definitely stay there again."

SAR 607 total

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29 Jul - 30 Jul

"Great location at a great price."

"Excellent location and very friendly and helpful staff, good breakfast!"

"Carpet needs to be removed. "

SAR 418 total

includes taxes & fees

27 Jul - 28 Jul

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Top Mira de Aire Hotel Reviews

Hotel Estrela de Fatima

10/10 Excellent

"This location was excellent. Close to everything in the heart of Fatima! Staff was amazing and so was the breakfast. "

Hotel Dos Templarios

10/10 Excellent

"This is a large and luxurious hotel that's a great base for exploring the area. The rooms are comfortable and huge, the staff helpful and competent, the facilities (pool, pool table, etc.) really nice (the indoor pool is quite something, though we didn't need it in the summer). Breakfast delicious in the Portuguese manner---we never tried the restaurant for dinner but it looked fine. The Templar castle/monastery is well worth a visit in itself, and Tomar has some nice restaurants. And Coimbra, Nazare, and the monasteries at Batalha and Alcobaca are all within about an hour's drive."

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