i just started playing gothic again, wanted them all 3 done again

prob is i left old mine at first when i had the list to get accepted…
now i need to go back for the crawlers but i closed the gate for fun after first time
now i cant get it open again… getting in isn t a prob, but getting out IS,
so what to do…
don't got saves from that point :s
not feeling like starting all over again :s