ゼロ子午線記念碑（エル・イエロ）

Meridiano Cero marks the historical prime meridian for much of the world's cartography before the adoption of the Greenwich Meridian in 1884. In the 2nd century A.D., Ptolemy designated El Hierro as the westernmost known point, establishing it as the zero meridian. This was officially decreed by France in 1634, defining the Meridian of Ferro as 20° west of the Paris Meridian. For centuries, maps used this reference, making it a pivotal site in the history of navigation and cartography.

Due to its remote location at Punta de la Orchilla, Meridiano Cero is not directly accessible by public transport. Visitors typically reach the area by car. While there's a comfortable road leading to the general area of the Orchilla Lighthouse, the final stretch to the monument involves a dirt road, often requiring a 4x4 vehicle or a walk of about 20 minutes from where a regular car can be parked.

While there isn't a single named 'Meridiano Cero El Hierro trail,' the primary walk is from the nearest parking area to the monument itself, which takes approximately 20 minutes. This path allows visitors to experience the rugged coastal environment. The broader area around Punta de la Orchilla offers various walking paths and routes for those wishing to explore more of El Hierro's unique volcanic terrain.

The monument stands at an elevation of approximately 66 meters above sea level. The walk to Meridiano Cero is generally easy to navigate on foot, but the terrain is rugged and volcanic. Sturdy footwear is advisable to comfortably traverse the path. The area is characterized by dramatic volcanic landscapes, offering striking contrasts of grey and ochre rock against the deep blue Atlantic.

The walk to Meridiano Cero is generally suitable for families, though the rugged terrain means sturdy shoes are recommended for everyone, including children. The remote location and dramatic views can be an engaging experience for all ages. The area is also dog-friendly, and hikers have noted encountering friendly lizards along the path, adding to the natural charm.

No specific permits are required to visit Meridiano Cero or to hike in the immediate surrounding area of Punta de la Orchilla. It is freely accessible to the public.

While the intro mentions daylight, sunset, and stargazing, for a less crowded experience, consider visiting earlier in the morning. The remote nature of the site means it rarely feels overly crowded, but peak tourist times might see more visitors. The island's mild climate makes it suitable for visiting year-round, but be prepared for potentially windy conditions, especially during cooler months.

Meridiano Cero is located in a very remote area at Punta de la Orchilla, and there are no direct facilities such as cafes, restaurants, or accommodation immediately adjacent to the monument. Visitors should plan to bring their own food and water. The nearest towns with amenities would require a drive, so it's best to prepare before heading to this westernmost point of El Hierro.

The most prominent nearby landmark is the Faro de Orchilla (Orchilla Lighthouse), which also stands on the line of the former meridian. The entire area of Punta de la Orchilla is a natural feature in itself, characterized by dramatic volcanic cliffs, unique geological formations, and expansive views of the Atlantic Ocean. It's an excellent spot for experiencing the raw, untamed beauty of El Hierro's coastline.

Due to the rugged, unpaved dirt road leading to the monument and the volcanic terrain around it, Meridiano Cero is not wheelchair accessible. The final approach requires navigating uneven surfaces and walking for about 20 minutes from the nearest regular car parking.

Given its remote location and rugged environment, it's advisable to bring sturdy footwear for walking on volcanic terrain. Also, carry sufficient water and snacks as there are no facilities nearby. Depending on the weather, a windbreaker or light jacket is recommended, as it can be windy. Don't forget your camera to capture the stunning views and historical monument!