This is the moment police rumbled a remote cannabis-growing farm in the mountains of Sevilla.

The Guardia Civil said it seized 2,500 plants and arrested four suspects following the discovery of the site near Aznalcollar.

The complex was so inaccessible that officers had to approach on foot and use a helicopter to remove the plants.

Investigators also seized 50kg of dried cannabis buds from a processing area.

The four suspects allegedly attempted to escape across the steep terrain as officers arrived. All have been remanded in custody without bail.

Aerial surveillance first identified suspected plantations concealed on the slopes of a valley, far from residential areas and without usable vehicle access.

Officers planned a specialist operation to reach the site without alerting those tending the crops. Drones monitored the approach and potential escape routes across the valley.

Once inside, investigators discovered several separate growing areas connected by an extensive network of narrow paths prepared by the suspects.

The complex had irrigation equipment, generators, tools and dedicated drying spaces.

Water was supplied using pumps, pipes and storage tanks, including large pools positioned around the mountainside near a watercourse.

Officers also found sleeping quarters, rest areas and cooking facilities, allowing those tending the plants to remain at the site for extended periods.

After cutting down the plants, officers carried them to an area near a dry riverbed. A Guardia Civil helicopter from Granada then lifted them out for destruction.

The suspects were brought before courts in Sanlucar la Mayor over alleged drug offences and membership of a criminal organisation.

The investigation remains open.

Read more Andalucia news at the Spanish Eye.