You dont see someones els location of death on the map, but you can find their tombstone.
However unless the player that dies does a great job of guilding you to the location, it might be hard to find.
The tombstone is rather small, and bushes and rocks can obstruct your view to it.
If there was a lot of momentum when dying, a tombstone can be placed somewhat away from where a player died. In the same way you can Yeet a greydwarf off a hill and see it explode only when it already rolled down hill.

One more thing to note; If a player died multiple times, without getting their loot back... You get multiple markers on the map, but only 1 tombstone that has all the gear.
If you die without anything on you, there is also no tombstone.