16 stone pillars 2 behemoth stone gates and 2 behemoth stone gateways and you have yourself a theri trap, put the pillars close but not to close so you can get out of the trap. Once the theri is in you have to be fast and close the gate. Once it is trapped if you have tames around it put them far away from the cage or put them on passive cause they will attack it, my argy almost died cause it was on neutral, have a ton of narcotics/bio toxin while doing this.

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