This section of the Trail is full of contrasts. The first part takes cyclists past some amazing tingle and karri trees, and the ride along the Frankland River near Monastery Landing and Sappers Bridge is exceptional if a bit challenging. The last section from Jinung hut is spectacular as well; the hut is under the karri trees, the ride goes past Greens Pool and Waterfall Beach and along the Coast, with really spectacular views.
The 50km section of Trail in the middle, along Middle/Boronia/Break/Nornalup/Mt Lindsay Rds, is flat, open, gravel road with no shade and can be considered a somewhat tedious ride. The 2km stretch of corrugated road from Green Pool towards Lights Beach is also a challenge - it is also a beach access road, so cyclists have to share the road with cars.
Coalmine Beach is on the south shore of the beautiful Nornalup Inlet. The Knoll is a peninsula, which divides Nornalup and Walpole Inlets and is accessible by the one-way sealed Knoll Scenic Drive. This drive follows the perimeter of the Knoll with views of Walpole and Nornalup inlets. It is just off the edge of the Munda Biddi map as the trail joins the Coalmine Beach road. The loop is around 2km long.
The Nornalup estuary is unique among south coast estuaries in that its sand bar never closes. Consequently, the estuary is tidal, and the continual flushing by ocean waters means the inlets are a healthy environment for marine life. Fresh water feeds into the inlets from the Frankland, Deep and Walpole Rivers all year around, although 80% of the flow comes in the wettest months of June to October.
The first 10km of Trail in this section takes cyclists around the Nornalup Inlet and then parallel to the South Coastal Highway. The Giant Tingle tree is about 2km up Gully Rd.
The Trail then follows the Frankland River. Although the Trail avoids most of the hills in this section it is still a bit of a roller coaster ride. The challenge is, however, worth it - there are towering tingle and karri trees everywhere and the views of the Frankland River are beautiful.
Monastery Landing is landing on the rivers edge, with picnic table and chairs but no other facilities. The Valley of the Giants tree top walk is about 1km from the Munda Biddi route and well worth the detour. The 600 metres loop is up to 40 metres high above the tingle and karri trees. It is on a series of lightweight steel trusses built on steel pylons to form a secure ramp, so there is no climbing involved.
Jinung Beigabup hut is set under regrowth karri trees facing Mt Lindesay and is one of the best huts for views. Mt Shadforth, not too far from the Trail, offers changing scenes of cattle grazing on pastured farmland to forest and ocean vistas. There are also distant views to the Porongurup Range and Stirling Range, as well as Mount Lindsay.
Greens Pool, in William Bay National Park, is almost completely sheltered from the waves of the Great Southern Ocean and is one of the most popular destinations in Denmark.
Lights Beach is three beaches accessible from one single location. The eastern beach has an ocean-waterfall with waves crashing into Princess Pool and coursing down the waterfall onto the beach. The centre beach offers a fantastic view of William Bay and the Southern Ocean. The western beach has an offshore island and connects to William Bay National Park. The Bibbulmun Track passes directly across the beach, very close to and occasionally crossing the Munda Biddi. All year round there is a small stream coming from the surrounding countryside and coursing across the beach. Its tea-coloured water is due to the leaves which stain the water with tannin.
For more information on cycling from Walpole to Denmark, go to the Section by Section Guide.