Depends who you ask

Lora Pov#2: You managed to help your friends Jay,Tila,Onna & Kelly pile up the gotten flat plywood in a sturdy place on the ground to start building cabins. "Since we have no nails nor hammer, we may have to badly improvise" Tila say nervously biting her nails. "We need to thatch" Onna got the bright idea of building roofs with dry vegetation like straw,water reed,sedge,rushes,heather, layering the vegetation so as to shed water away from the inner roof. They were simply 4 cornered plywood walls with 1 broken one for a door, 5th be the plywood roof one plus the scalene thatched roof. Easy right? Wrong! You girls then found out you needed some kind of rope,vine or rocks to unite around & keep the edges from falling apart. Ground couldn't do everything that good. Then we hear Tammy, Tracy & Laniti arrive catching their breaths as Tracy shouted "Hey girls! We here!" "Oh, they're back" you say. "But where's Trillia?" Kelly asked. "She's..presumably dead" Tracy answered in a low tone."What?!No!Dont say such nonsense, a Slitherane just pleasured her"Laniti revolted at the thought. Oh they got a big strapon pounding from Tila & Onna to teach them a lesson of not to ever go be leaving partners behind. "We need to find her!" Jay say. "Fast!" Kelly & you agree with Tammy as your guide so you girls volunteer to find & rescue her if she okay. In reality, Trillia was pretty knocked up & so extremely wet from all the tail thrusts the Slitherane gave her & tossed aside like a ragdoll as she couldn't feel her legs.

wikipedia.org/wiki/Thatching#History