For context; story mode (Ch 2), unmodded, on PC.
Tried looking in several guides and wiki's but couldn't see it listed, so wondering if anyone else is aware of this spawn point, and hoping to help others looking for those moose antlers.
Normally I get the bull moose that spawns when you get the white Arabian up at Lake Isabella. For some reason, I didn't see it on this playthrough. Saw a post on this subreddit about the spawn near the 'I' in Ambarino (blue circle), so I spent a few days camped at the blue triangle, and riding up throughout the day. Definitely a good spawn location, with the downside of having to spook the moose to a spot where you can actually skin it. I was pretty unlucky and only found cows over the course of a few days. Gave up, went off and did some other things, and decided to give it another go. I was heading back north to make camp (in the direction of the red arrow). Just as you approach that crossroad, there's a rise to the left (red circle). The local area around the intersection is a great spawn point for high quality deer and elk, but there's a moose spawn point where that circle is. I went back several times, and its a very high rate of spawning, much more than the Ambarino spawn - I've seen more moose here than my last two playthroughs combined. Decent line of sight from all three road directions, but the arrow one is definitely the best. Bulls also seem to spawn a lot more than cows. Haven't mapped out the times or anything, or confirmed it with anyone else, hoping to get some confirmation from everyone in here.