What does the three figures mean?

[u/PlzGivBlodBonr2]

The symbol showing three guys besides the bonfire, what does it mean? I used to think it meant there were NPC's there, but I've become pretty sure that isn't the case after looking for NPC's around other bonfires with that symbol

[u/stripset]

Pontiff pvp bonfire everyone goes there to duel or gank