A kiss
As they ventured down this old Ignite Castle, one fact became clear. Most passages, or what we can consider passages have long been decapitated by what instability time can tag along.
Point is, dirt and stone have blocked most of the tunnels this place has to offer. Although illumination dim, half way through the staircase as they gazed upon their left side they could spot ancient Ignite architecture that symbolizes doors or tunnels.
These doors have been overtaken by crumbling stone, broken beyond repair and rendered out of use.
As curious as they are, the two explorers can't be wasting any time trying to dig through these collapsed tunnels. Clearing a tunnel is a job for 10 people and at such a case it wouldn't be necessary because it would never lead to a Portal.
Most passages are blocked yes, at least that's what they saw so far and like everything this has a good and bad side.