A tomb that was taken apart and put back together

The dolmen farmers spent a century stealing

A Neolithic burial chamber near this point spent generations losing its stones to local farms before archaeologists lifted them upright again in 2018.
Last reviewed 20 September 2026 · A two-minute read · 4500 BC–2024
The short answer

Casal de Cambra, in Sintra municipality near Odivelas, is home to the Anta das Pedras Grandes, a Late Neolithic dolmen built between roughly 4500 and 2000 BC. Its eight standing stones fell and were stripped for building material over centuries before being raised upright again in 2018, inside a small urban park.

The dolmen farmers spent a century stealing — Sintra
The recently recovered dolmen known as the Anta das Pedras Grandes in Odivelos municipality near Lisbon — 2019 · Roundtheworld · CC BY-SA 4.0
4500 BC to 2000 BC

Eight stones once held a chamber of the dead

Eight standing stones, each about 10 feet tall, once formed a long chamber near this point. Builders raised them during the Late Neolithic, sometime between 4500 and 2000 BC, and added a short entrance corridor to a single burial chamber. This structure, known as the Anta das Pedras Grandes, held human remains and once stood beneath a mound of earth called a tumulus. Flint chippings found scattered around it suggest people worked stone tools on this same ground for generations. It was one of many such tombs built across this part of Portugal. The Portuguese word for these monuments is "anta," and roughly 5,000 once stood across the country.

Centuries of farming and building on this land wore the tomb down. Its stones fell, and people carried pieces away for walls and foundations. By the time anyone looked closely, only a stripped ruin remained standing among the fields.

Farmers and builders spent generations pulling the stones down for their own use.
1880 to 2018

Farmers stripped a tomb until archaeologists raised it

In 1880, the archaeologist Carlos Ribeiro identified the ruin as an ancient dolmen. It was the only one in its immediate area intact enough to recognize. Records describe several others found nearby around the same period. The Portuguese state listed it as a National Monument in 1944, protecting what little the farmers had left. Excavations in the early 21st century mapped the collapsed stones and confirmed the tomb's original layout. In late 2018, workers raised the fallen stones back into position. The dolmen now stands at the center of a small urban park that opened the same year. Its eight stones stand upright again after lying flat for generations.

1989 to 2013

Mapmakers redrew the parish three times over

The ground the dolmen sits on has changed hands administratively as often as it lost its stones. A parish called Famões was carved out in 1989, covering this stretch of Loures. In 1998, a new municipality, Odivelas, absorbed it whole. Mapmakers erased the parish outright in 2013, folding its territory into a larger administrative unit and ending its name for good. Three redrawings in twenty-four years, each one dissolving what the last had assembled. The dolmen kept standing through all of it, unmoved while the paperwork around it kept changing shape.

What finally arrived at the police station a short distance from the tomb?
October 22, 2024

A Molotov cocktail burned a police car nearby

At 8:39 PM, someone threw a Molotov cocktail at a police vehicle parked outside the PSP station in Casal de Cambra. The vehicle burned and was damaged. The attack came amid unrest spreading across greater Lisbon after a police shooting left a man dead. The station sits close to the same ground where the dolmen's stones once lay scattered and stripped for generations.

The following night, someone tried again, and this time nothing broke.
October 23, 2024

A second thrown object left the station intact

A projectile was thrown at the same police station the next night, October 23, 2024. Disturbances continued across the city over the police shooting from days before. This time the object caused no damage. The station stood intact, the way the last standing dolmen in its district had stood while others nearby were pulled apart and lost.

Eight stones stand upright again on this ground, holding a shape that took four thousand years, a century of theft, and one afternoon in 2018 to recover.

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Where this is

38.801°N 9.223°W TILE ≈ 1.2 × 0.6 KM
Place
Casal de Cambra
Town
Sintra
Country
Portugal
Tile
≈1.2 × 0.6 km (geohash6)
Last reviewed
20 September 2026

The layers, in order

Sourced records, high and medium confidence. Era background is marked as such.
Prehistoric
Late Neolithic, c. 4500–2000 BC
The Anta das Pedras Grandes, a Late Neolithic dolmen built between roughly 4500 and 2000 BC, stands about a kilometer from this spot in Odivelas municipality.
Wikipedia · record, high
3336–2932 BC
A nearby sample, BETA-228583, pushes the dated activity on this ground back to between 3336 and 2932 BC.
3085–2889 BC
A radiocarbon sample taken about a kilometer away, cataloged as BETA-239755, dates human activity on this ground to between 3085 and 2889 BC.
Modern
1915–1998, then 1998–2013
Caneças parish, a couple of kilometers off, existed under Loures from 1915 before passing to Odivelas municipality in 1998.
Era background — not a record of this tile · FamilySearch Places
1944
Portugal classified the Anta das Pedras Grandes as a National Monument in 1944, and excavations in the early 21st century investigated it further.
Wikipedia · record, high
1989–1998, then 1998–2013
The nearby parish of Famões belonged to Loures municipality until 1998, when it was reassigned to the newly formed Odivelas municipality.
Era background — not a record of this tile · FamilySearch Places
1997
The land around this spot was folded into the newly created civil parish of Casal de Cambra in 1997, part of Sintra municipality.
FamilySearch Places · record, medium
October 22, 2024
On the night of October 22, 2024, someone threw a Molotov cocktail at a PSP police vehicle parked at the Casal de Cambra police station, damaging it.
Sintra Notícias · record, high
October 23, 2024
The following night, October 23, 2024, a projectile was thrown at the Casal de Cambra police station amid wider disturbances across greater Lisbon after a fatal police shooting elsewhere in the city.
Euronews · record, high

Questions about this place

Answered in one sentence, then in full above
What was here before the dolmen was restored?
A stripped ruin stood on this ground for generations, its eight stones fallen and pieces carried off by local farmers for walls and foundations, until archaeologists raised the stones upright again in 2018.
What is the Anta das Pedras Grandes?
It is a Late Neolithic dolmen, a burial chamber built between roughly 4500 and 2000 BC from eight standing stones about 10 feet tall, with a short entrance corridor and a mound of earth that once covered it.
When was the dolmen protected as a monument?
Portugal listed the Anta das Pedras Grandes as a National Monument in 1944.
What happened at the Casal de Cambra police station in October 2024?
On October 22, 2024, someone threw a Molotov cocktail at a parked police vehicle, damaging it, amid unrest across greater Lisbon following a fatal police shooting. The next night, October 23, a projectile was thrown at the same station but caused no damage.
How has the local administrative area changed over time?
A parish called Famões was created in 1989 covering this stretch of Loures, was absorbed by the new municipality of Odivelas in 1998, and was dissolved in 2013 when its territory was folded into a larger unit; separately, Casal de Cambra became its own civil parish within Sintra municipality in 1997.

Where this came from

1
Wikipedia — A Neolithic dolmen a short walk northeast
2
OpenContext / p3k14c radiocarbon dataset — Radiocarbon dates from around 3085 BC nearby
3
OpenContext / p3k14c radiocarbon dataset — A second radiocarbon date, older still
4
FamilySearch Places — Casal de Cambra becomes its own parish in 1997
5
Sintra Notícias — A Molotov cocktail hits a police car at the Casal de Cambra station
6
Euronews — Riot projectile thrown at the same police station the next night

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