Where is "center" of island for Twin Seas Uber

[Booty_Warrior]

I have the scroll and I'm trying to summon the Amazon boss level but it won't spawn. Am I in the wrong place? Where exactly should I be?

[lunar.seven]

I have the scroll and I'm trying to summon the Amazon boss level but it won't spawn. Am I in the wrong place? Where exactly should I be?

maybe you mean this ?

Location
Island of Skartara (Tran Athulua)
Kill Kethryes in the Halls of the Dead to open a portal to Tran Athulua and navigate to the Island.
Once at the island, use an Askari Scroll dropped by one of the Priestesses in Tran Athulua to summon her in the center of the island.