Wildwood place of worship to the Goblin god of death, Shintal.

Stone gargoyles leer down at you from the top of the Temple of Shintal. - Festival of Heroes (GS-ADV1)

The temple contains a large, bronze idol of Shintal. He holds a golden bowl, which has been well used. Dried blood and remnants of decaying bones can be seen in the bowl. Remains of previous sacrifices. A workbench is available for concocting potions and poisons.

The temple also contains many statues to lesser gods:

To your horror, you realize that one of them is of the Frogkin woman you released from the mines. The statue’s base reads, “Yalaka, Frogkin goddess of nightmares.” - Festival of Heroes (GS-ADV1)

The temple has been recently closed by the decree of Queen Gimnax.

The front doors have been barred, and an edict has been plastered over the wood: “Temples dedicated to the Dragul gods, and all other false gods of destruction and disorder, are closed by order of the queen.” - Festival of Hereos (GS-ADV1)

By making an offering to Shintal in this place, you reveal a hidden area with direct ties to the Order of Assassins;

In response to your sacrifice, Shintal’s eyes light up, glowing red. Hidden gears crank in the shadows and a section of the wall pops open, revealing a secret staircase. - Festival of Heroes (GS-ADV1)

Beneath the temple, you discover a secret room. It has long been rumored that the Shintal high priests have given sanctuary to the Order of Assassins. Here, you appear to have found proof of this accusation.

A number of tiny scrolls have been tucked into niches in the stone wall. Each bears the name that has been crossed out. You surmise that these are the names of those who have already fallen victim to the assassin’s blade.

…

The walls are lined with a small arsenal of weapons. - Festival of Heroes (GS-ADV1)