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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Guest Houses in Porto de Mos

"It is near the downtown and you can walk"

Standard Double Room | Premium bedding, desk, soundproofing, iron/ironing board

"Small but cozy. beautiful view of the castle. "

AED 266 total

includes taxes & fees

27 Jul - 28 Jul

"This place has the essentiel things needed Not very fancy Clean Excellent costumer service Full kitchen Leaving room Close to the sanctuary Room are a Little small but for this price it is exceptionnel "

AED 99 total

includes taxes & fees

22 Jul - 23 Jul

"The location was gorgeous and perfect for exploring the castle in Obidos. Parking and check in were convenient as well."

"free parking, good facilities in the rooms"

AED 237 total

includes taxes & fees

22 Jul - 23 Jul

Superior Double Room | 1 bedroom, desk, blackout drapes, soundproofing

"Cozy room with all amenities needed."

AED 532 total

includes taxes & fees

21 Jul - 22 Jul

"Great breakfast and location"

"Excellent location!"

"Thanks for a great stay:)"

AED 316 total

includes taxes & fees

22 Jul - 23 Jul

Suite (New Wing) | Premium bedding, soundproofing, iron/ironing board

"Great, tastefull decorated, charming hotel with the best breakfast"

AED 623 total

includes taxes & fees

22 Jul - 23 Jul

Outdoor pool, pool umbrellas, sun loungers

"The rooms were spacious and clean and the grounds were beautiful. Plenty of parking and an easy drive to Obidos. Luckily we were there on a cool night so the lack of air conditioning was okay but a fan would be nice to keep the air moving. Breakfast was lack luster and the bed pillows could use updating. However, it was a really cute space to stay with a family for a few days"

AED 436 total

includes taxes & fees

25 Jul - 26 Jul

"Staff were very pleasant and helpful. Small hotel but would stay here again. "

AED 419 total

includes taxes & fees

21 Jul - 22 Jul

Outdoor pool, open 8 AM to 9 PM, pool umbrellas, sun loungers

"Amazing property super clean Great staff"

AED 384 total

includes taxes & fees

25 Jul - 26 Jul

"Excellent reception from staff, great food, comfortable & clean, lovely surroundings. Highly recommend this location."

"The hotel is very clean and super close to the Sanctuary, with friendly staff/owners."

"Fun stay and the owners were super nice!"

"It’s an authentic portuguese village. Don’t let the outside fool you the interior and the stay was outstanding. The host made it completely enjoyable and was super informative. Definitely will come back. "

"Great location "

AED 375 total

includes taxes & fees

28 Jul - 29 Jul

"The property is potentially charming. It is centrally located, close to the beach, and quiet. Climbing up and down from floor to floor can be challenging, especially if carrying anything, or if you need to make a bathroom trip from the bedroom in the middle of the night. The kitchen is well-equipped with utensils, pots, pans, dishes and silverware, but not much in the way of cooking essentials (salt, pepper, oil, coffee, tea, etc.) It was also quite damp throughout (the dehumidifier required...