I am in the 6th chapter: Silver Mines, Cloudy Linings--on the second level of the mine shaft after releasing the two prisoners.The objective is reach the surface.


I am near the end of this section--I have blown up all of the blockades, found the map, the health treasure, killed all of the guards, etc.
One of the blockades was in front of what appears to be an elevator shaft. When Jack goes on it nothing happens. I have tried cutting ropes but no x appears. I knocked down to wood braces in front of this section, they blew up but nothing happened the elevator staid put. I have tried getting on with a mine cart and this did not release it. I tried blowing a mine cart up on the elevator and nothing happens. Is this elevator platform what I need to reach the surface. All other avenues appear to be dead ends--mine carts explode over cliffs etc. except for this one.