If by gap you are referring to the construction picture then the space that you see is viewable from the picture with the triangular staircase visible. The wall just to the right is the second wall that you see from the other (construction) room.
https://sli.mg/8m3Qo4 The wall to the right that connects to the beam in the roof. If you follow that wall down you can see that it is the second wall that you see in this pic ringed in yellow https://sli.mg/WXNVRe
[–] DarkMath ago
Can you provide a link to that pic? Thanks.
[–] Yuke [S] ago
https://sli.mg/8m3Qo4 The wall to the right that connects to the beam in the roof. If you follow that wall down you can see that it is the second wall that you see in this pic ringed in yellow https://sli.mg/WXNVRe