So while i was playing i discovered a marker showing a fort near by so i went to it and "discovered" the location and then i noticed the fort was a tunel leading into a hill so i went in and fought some ash spawn but the tunnel dead ended leaving the fortress to really just be a tunnel with a dead end, is there any purpose at all to this location or am i missing something?

I know the fort youre talking about and it opens up when you've advanced far enough into a quest for Neloth

Oh thanks for the help