#1 – Infiltration points #1

#2 – Infiltration points #2

#3 – Infiltration points #3

#4 – Infiltration points #4

#5 – Infiltration points #5

#6 – Infiltration points #6

#7 – Infiltration points #7

#8 – Infiltration points #8

Drainage tunnel - to mark it, just dive in and look at it, to use it, you need to finish prep mission: Cutting torch.