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You can add a map marker for Big tree, Koh Yao Noi and a new sector on Big tree, Koh Yao Noi's map page and then add topos for the new sector.
Monkey and the engineer, 6c
Added by
Erik Djerf
Grade opinions
Ascents from public tick lists
![](https://27crags.s3.amazonaws.com/photos/000/056/56951/small-916b68ab6205.jpg)