What is the icon on the map? (Sleeping Dogs)

It's like the altar (or what is it called in the game?) That you already used. Is not it so?

Right. This is a used altar

the most important thing is to take the right angle.

By the way, I wrote incorrectly - not on the map - but on the radar
and the point is that the unused altars are displayed on the radar - they have a different icon and
thought a statuette for a new blow - they have already collected everything

here are the designations of objects - here is a completely different icon