I will be posting screenshots of the hidden tunnels here as I get them. Super spoilers ahead folks.

















Stretching this post down a bit to hide the pictures in case anyone mistakenly clicks this....























Just a tad more....













And on to the spoils!!!

Getting to the first tunnel: pictures in order from docks.


After getting off of the docks keep going right.


Don't go up to the chest, keep walking right.


From where my avi is standing go straight up.

Now from the top of this small space keep going right until you are in the top of the tunnel. It's long but it's worth it.


Onto the next tunnel. I will be starting at the boss hut for area reference.


Go down from the boss hut through the archway.


Go straight down from where my avi is and you will be in the first part of the hidden area.


Now go right from where my avi stands and you will be in the second part of the hidden area.