As mentioned, downstream of Lillestryket there is a deep pool. The neck going out of this pool is the start of the longest piece of rapids in zone 4. This spot is mostly known as "Brekket (the neck to) Langstryket" or "the top of Langstryket", and it's located here. Unfortunately you won't be able to fish this neck from the road side, as it's to deep to wade, and no way of following a fish if it decides to go down the neck. Though, if you manage to cross by a boat, it will be easily fished.

A nice neck going into quite heavy rapids