We simply cannot rely on GPS when hiking, there is no alternative for a good experienced leader plus a good map/compass.
As you can see, the initial part of the GPS log is quite messy. This is where you have so many tall trees around you and therefore, the signal strength are relatively weak and so the accuracy is highly compromised.
When we are in the open areas, the track is very accurate, however, in those places, you can actually see where is the way ahead.
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