Groen Lint Langs de Oude Maas Loop

Embarking on the "Groen Lint Langs de Oude Maas" hike offers a serene journey through the lush landscapes along the Oude Maas River in South Holland. This approximately 17-kilometer (10.5-mile) loop trail is predominantly flat, making it accessible for hikers of all levels.

Getting There

The trailhead is located at Albrandswaarsedijk 196, 3172 XB, Poortugaal.

• By Public Transport: From Rotterdam Centraal Station, take Metro Line D towards De Akkers and alight at Poortugaal Station. From there, it's a short walk to the trailhead.

• By Car: If driving, take the A15 motorway and exit at junction 19 (Rhoon/Poortugaal). Follow the N492 towards Poortugaal, then turn left onto Schroeder van der Kolklaan, following signs for the recreational area Oude Maas. Parking is available near the trailhead.

Trail Overview

The hike meanders through the Rhoonse and Carnisse Grienden, unique freshwater tidal wetlands characterized by their willow forests and rich biodiversity. The terrain consists of well-maintained dirt and gravel paths, with occasional boardwalks over wetter sections. Given the flat nature of the trail, it's suitable for hikers of all abilities.

Key Highlights

• Rhoonse Grienden: Starting from the trailhead, you'll enter the Rhoonse Grienden, a vast area of willow forests that are periodically flooded by the tides of the Oude Maas. This ecosystem supports a variety of birdlife, including herons and kingfishers.

• Klein Profijt: Approximately 5 kilometers (3.1 miles) into the hike, you'll reach Klein Profijt, a section of the grienden that has evolved into a dense willow jungle. This area is a haven for beavers and a variety of bird species.

• Carnisse Grienden: Around the 10-kilometer (6.2-mile) mark, the trail leads into the Carnisse Grienden. This area features a network of boardwalks and offers views of the tidal wetlands and the Oude Maas River.

• Oude Maas Riverbank: The trail skirts the river, providing wide views across the water and a chance to spot passing ships. Benches along the bank make for pleasant rest stops.

Flora and Fauna

The grienden are renowned for their willow forests, which are periodically flooded by the tides of the Oude Maas. This rare ecosystem supports a variety of birdlife, including herons, kingfishers, and sometimes even cormorants. In spring and early summer, the area bursts with wildflowers and the buzzing of insects, while autumn brings a golden hue to the willows. Keep an eye out for roe deer and rabbits, especially in the quieter stretches.

Historical Significance

The Rhoonse and Carnisse Grienden are living testaments to Dutch water management. For centuries, local farmers harvested willow branches here for use in dike reinforcement and basket weaving. The area’s network of dikes and sluices reflects the ongoing battle against the tides, a theme central to the history of South Holland.

Preparation Tips

• Footwear: Waterproof footwear is recommended, especially after rain, as some sections can be muddy.

• Navigation: While the trail is well-marked, using HiiKER for digital maps and waypoints can enhance your navigation experience.

• Facilities: There are limited facilities along the route, so carrying sufficient water and snacks is advisable. Cafés and restrooms are available near the trailhead.

Embarking on this hike provides a unique opportunity to experience the dynamic interplay between nature and human ingenuity in the Dutch landscape.