Summoning Blazamut Ryu, the Level 55 Dragon/Fire/Electric raid boss? There's no map pin for this one. You bring the fight to your base via a Summoning Altar, and the clock starts the moment it lands. Below: how to summon it, why Water and Dragon and Ground damage is the play, what it drops, and a fight plan that beats the timer.
Blazamut Ryu is a raid boss, so there's no map pin. Blazamut Ryu Slab (4 fragments) at a Summoning Altar
Blazamut Ryu is Dragon + Fire + Electric, so lead with Water and Dragon and Ground damage and you'll carve through its health bar fast. Reliable picks: Penking, Jormuntide, Jetragon, Astegon, Anubis, Digtoise. Pack a bow or firearm too, since poking from outside its attack range beats trading hits up close.
Use the free Palworld Breeding Calculator to see every pair that makes the Pal you want, or what Blazamut Ryu can breed into.