Pembroke has the last large expanse of karstland left in Malta, covering over 60 hectares of garigue.
Endangered plants are still found in the area, the most important of these is the thorny salad-burnet (Maltese: Tursin il-għawl xewwieki).
Aleppo pines (Maltese: Żnuber) dominate the forested areas.
The coastal zone is designated a Special Area of Conservation(SAC).
The rocky coast, watercourse and karst land surrounding and including the Pembroke rifle ranges are scheduled locally as 'Areas of Ecological Importance' and 'Sites of Scientific Importance', whereas the rifle ranges themselves are protected as historic structures.
This garigue zone hugs the coast and is interrupted by the 'Reverse Osmosis' water desalination plant, the largest plant in Malta.
 The plant was purposely placed on the Pembroke coast due to the cleanliness of the pristine sea water in the area, free from any effluent or any agricultural run-off.

A geological feature unique in the Maltese archipelago is the large natural cavern at the Ħarq Ħammiem valley which separates Pembroke from St. Julians.
 The large cavern tops a closed lake having a surface area of 300 square meters and is very deep.
An underwater survey commissioned by the Maltese government in 2001 discovered the lake's depths were even deeper than previously assumed.
The underwater formation consists of two large chambers interconnected by a corridor.
The lower chamber is fully submerged.
This unique feature is not well known as access to the cavern is blocked by a private enterprise and this irregular claim does not seem to be challenged by the authorities.
The Malta Environment and Planning Authority (MEPA) has declared Ħarq Ħammiem cave and the full extent of the remnant valley system as an Area of Ecological Importance and Site of Scientific Importance as per Government Notice No.
370/08 in the Government Gazette dated 23 April 2008.
Pembroke has the last large expanse of karstland left in Malta, covering over 60 hectares of garigue. Endangered plants are still found in the area, the most important of these is the thorny salad-burnet (Maltese: Tursin il-għawl xewwieki). Aleppo pines (Maltese: Żnuber) dominate the forested areas. The coastal zone is designated a Special Area of Conservation(SAC). The rocky coast, watercourse and karst land surrounding and including the Pembroke rifle ranges are scheduled locally as 'Areas of Ecological Importance' and 'Sites of Scientific Importance', whereas the rifle ranges themselves are protected as historic structures. This garigue zone hugs the coast and is interrupted by the 'Reverse Osmosis' water desalination plant, the largest plant in Malta.  The plant was purposely placed on the Pembroke coast due to the cleanliness of the pristine sea water in the area, free from any effluent or any agricultural run-off.
A geological feature unique in the Maltese archipelago is the large natural cavern at the Ħarq Ħammiem valley which separates Pembroke from St. Julians.  The large cavern tops a closed lake having a surface area of 300 square meters and is very deep. An underwater survey commissioned by the Maltese government in 2001 discovered the lake's depths were even deeper than previously assumed. The underwater formation consists of two large chambers interconnected by a corridor. The lower chamber is fully submerged. This unique feature is not well known as access to the cavern is blocked by a private enterprise and this irregular claim does not seem to be challenged by the authorities. The Malta Environment and Planning Authority (MEPA) has declared Ħarq Ħammiem cave and the full extent of the remnant valley system as an Area of Ecological Importance and Site of Scientific Importance as per Government Notice No. 370/08 in the Government Gazette dated 23 April 2008.
Pembroke, Malta