Barragem do Arade
Approximately 25 km. from Carvoeiro. Head towards Lagoa, continue to Silves, turn right after the bridge towards Messines and drive until you see the sign pictured on the left.
Continue towards the barragem until you see this building and turn left just before it.
When you're ready to leave you can do so by crossing the dam, stay right and you'll end up at the same building, having seen the dam from two different locations.
The Barragem do Arade was built in the years between 1944 and 1956. It is one of the main reservoirs of water in the Algarve and is irrigating more than 2.300 hectares of citrus trees.
The water level is max.46 meters above ground and the dam itself is 246 meters wide
The dam also produces 1,35 GWh of electricity You can find more facts about the dam here [in Portuguese - opens in new window].
In a 4 wheel drive vehicle you can make some interesting excursions into the wilderness behind the dam, but please be careful as the tracks are extremely dangerous
You can have a lunch in the shade, amongst bird cages and plenty of childrens toys.
Tickets for the "Paradise Island" in the middle of the lake can be bought here. The island is open during the summer months [May-September depending on the weather].
Madeleine: Divers Search Reservoir
Martin BruntCrime correspondent Updated:05:58, Wednesday March 12, 2008
A team of divers has resumed its search of a remote Algarve reservoir in the hunt for missing Madeleine McCann.
Diver searches the water
So far they have recovered nothing but several lengths of cord, some plastic tape and a single white, cotton sock.
Human rights lawyer Marcos Aragao Correia is funding the private search in the belief that Madeleine's body was thrown into the Barragem do Arade shortly after being killed by an abductor.
He claims he was told of the girl's fate by an underworld contact.
It's the second time the lawyer has paid for divers to explore the reservoir which lies in rolling hills a 20-minute drive from Praia da Luz, the holiday resort from where Madeleine vanished in May last year.
In December - when Portuguese police refused to act on his claims - he paid around £3,000 for a first search.
Madeleine's parents, Gerry and Kate McCann, have dismissed Mr Correia as a self-publicist and believe there is no evidence to suggest there is any link between their daughter and the reservoir.
They don't believe Madeleine is dead and want any search to concentrate on finding her alive.
Mr Correia told Sky News: "The Portuguese authorities refused to carry out the searches themselves, as is their obligation. Any possibility that she may be in the lake should be taken seriously and duly investigated.
Madeleine McCann: Vanished last May
"They completely refused to give my tip-off any credibility whatsoever, so I took it upon myself to search."
He said that whatever his divers recover will be handed to the McCanns' private investigators as potential evidence.
Five divers are being helped by two firefighters who specialise in the recovery of bodies.
Their search is complicated enough, but they've also discovered that the bottom of the reservoir has layer of soft mud four metres thick, into which a weighted body would sink and disappear.
Last week, Portuguese police briefed a senior British detective on questions to be put to the seven friends who were dining with the McCanns on the night Madeleine disappeared from the holiday apartment where she was sleeping with her twin brother and sister.
That re-questioning is expected to be carried out in the next few weeks.