Fifty feet or so off the road is the only remaining accessible entrance to this tunnel.
It is quite steep down to what remains of the tunnel and much more difficult to get out of than to get in.

 

Malinta Gasoline Storage System | Middleside Officer's Qtrs | Btry Denver Tunnel | The Final Line of Defense | Not Finding RJ-43 |  Btry Chicago
 Malinta's Navy Tunnels (Part 1) (Part 2) | Type 96 AA Gun | A Walk on Tailside | G-1 Command Post