I can't work out for the life of me how to get the combination to open the bottom bridge. tried for ages with videos etc. any help on this would be fab :-)
Have you tried the maps?
Instruction for the levers is in the second picture
Edit: Sorry those are different levers. See if the last picture helps.
Next edit: Sorry, that idea was of no help, but see the posts below ⬇️
this mine is (since a long time) on my list of bridge-mines to figure out.
this should work
these 3 switches open the final bridges. I think that might be enough info to be able to do the mine. I am currently walking through it easily (other switches kinda work automatically).
If not then it will be overly complicated.