Whether a wall which makes a Karmelit into a Private Property [, and isn't 4 Cubits wide,] is also a Private Property automatically: Shabbat 99b
A pit 10 Tefach [Hand-Breadths] deep, but filled with water: Shabbat 100a
A pit 10 Tefach [Hand-Breadths] deep, but filled with solid items: Shabbat 100a
Status of an area which rises steeply above its surrounding areas [Tel haMitlaket]: Shabbat 100a; Eruvin 22b
A tree's overhang: Eruvin 15a, 99b-100a; Succah 24b-25a
A tree's roots: Eruvin 99b, 100a
In a harvested field, surrounded by uncut sheaves: Eruvin 15a; Succah 25a
Minimizing the height of a raised area by inserting a peg in the wall: Eruvin 78a
Status of three ruins which are located in an area separating two houses: Eruvin 85a-b
Status of a crossbeam which hangs over an area in a ruin, without any supporting walls: Eruvin 86a-b, 94b-95a
Status of a crossbeam which hangs over water: Eruvin 86a-b
Bridges which are adjacent, where there are walls descending on both outer sides: Eruvin 95a