A few questions on LOF when dealing with elevation and great size.

1) If A is on elevated terrain and shooting down at B, and it intersects a piece of blocking terrain on the ground is that LOF blocked? Does this make a difference with outdoor vs indoor maps? Does indoor blocking still go up to the roof or is that not true anymore?

2) What if instead of a piece of grounded blocking terrain there is a giant/colossal on the ground instead between A and B. Does this figure block line of fire?

3) If shooting from one piece of elevated terrain to another piece of elevated terrain is there ANYTHING on the ground between the two that can obstruct it? Giants, blocking/indoor/outdoor, etc.

Edit: Found 1 and 2 in the rule book.

16.5d Elevated Terrain and Line of Fire
A line of fire between two squares on the same elevation that crosses elevated terrain of a
higher level is blocked. Line of fire between squares on the same elevation is not blocked
by elevated terrain of that level or lower, though other terrain at that elevation level
affects it normally.
A line of fire between different elevations is blocked by:
 Blocking terrain on the lower elevation.
 Elevated terrain of any level higher than the lower elevation, except the square the
line of fire is being drawn to or from.
 A Giant or Colossal character.

1) Indoor/outdoor doesn't matter, elevated terrain cannot lof over grounded blocking.

2) Answered in rulebook that a colossal/giant does block line of fire against an elevated attack.

3) Still not sure.

3 is No. Nothing on an elevation lower than either level involved in the LoF affects the LoF.

More LoF, elevation & great size questions:

X X 2 2
G B 2 S
X X 2 2

Indoor map, giant figure (G) and barrier terrain marker (B) on elevation 1, shooter (S) on elevation 2 and 1 square back from the rim.

A) Because this is not outdoor, LoF between S and G are blocked by B, correct?

Great Size:
"Lines of fire drawn to or from this character are not blocked by elevated terrain or outdoor blocking"

16.3b Blocking Terrain and Line of Fire:
"If a line of fire drawn between a character and its target crosses one or more squares of blocking terrain, the line of fire is considered “blocked”."

B) Does S have LoF to B for a RANGE Destroy Action?

Despite the barrier being able to block LoF to the giant, because it is on a lower elevation than S a LoF can't be drawn to it if S is not on the rim?

16.5d Elevated Terrain and Line of Fire:
"A line of fire between different elevations is blocked by: Elevated terrain of any level higher than the lower elevation, except the square the line of fire is being drawn to or from."

A: correct
B: correct

I've found that the best way to handle this stuff is to just always remember that giants are bigger than elevation. Example, as where elevated terrain can't see over outdoor grounded blocking, a giant can.

The only real screwy thing is the equal elevation to equal elevation rule. Where even indoor blocking or colossals on the ground dont block it. Thats really the only rule that doesn't make sense that we have to abide by.