Portugal–Spain relations small Portuguese Marine Corps combat detachment and two wardens of Madeira's Natural Park. Over the years the Portuguese authorities have seized some Spanish fishing boats and crew around the area for illegal fishing and theft of light beacons and navigation buoys. As of 2017 Spain had approved a nuclear waste warehouse next to the Almaraz Nuclear Power Plant (which uses the Tagus river that flows into Portugal for cooling of the reactors), which is near the Portugal–Spain border, without carrying out any consultations or impact studies. Portugal has escalalted the matter to the EU. Protests were planned for January 12,
Border checkpoint crosses an internal Schengen border is legally not a "border crossing point". Border checkpoint A border checkpoint is a place, generally between two countries, where travelers or goods are inspected. Authorization often is required to enter a country through its borders. Access-controlled borders often have a limited number of checkpoints where they can be crossed without legal sanctions. Arrangements or treaties may be formed to allow or mandate less restrained crossings (e.g. the Schengen Agreement). Land border checkpoints (land ports of entry) can be contrasted with the customs and immigration facilities at seaports, international airports, and other ports of entry.