Question, I have Gustav's Boven RD, although it is some years old. Is there an update or reprint?
The RD for Waterval Boven was published in 2004 and I freaked out the other day when I saw my pile of guide books getting smaller and smaller! With well over 600 routes now, an update will be needed and I am slowly [thinking about ] working on it.
For now, use the book together with regular updates on the WIKI (on top of this page next to HOME and FORUM, click on WIKI). We actually just changed the format and updated it (with another 15 or so routes still to be added!). Check it out!