For someone (actor) to peer through an opening such as a door or window into a cave, house, pit, tomb (loc ref i-); to peer out at the exterior of something (loc ref i-), as indicated above.
Idungaw: focus is on the inside or outside of that peered through. Unspecified, reference is to the inside.
Indungaw'uy lūbu' ya timmā'ota' ti do'ol di tungal.
I peered into the tomb and I was afraid because there were many bones.
The word dola outside, or other contextual feature specifies peering out.
Hay wada' hi baluy ya unat goh indungaw'u ya tinnig'uh Maddug an maluh.
When I was in the house and when I peered out, I saw Maddug passing by.