You use it to lasso a pipe in the underground below the "hot hatch."
you can get it on the far left of steamworks island, past the living headquarters.
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There is a loop of old vine on the roof of the building at the far left of the island, past the Living Quarters. You should get it early because you will need it at the Hub.
The old vine is on the roof of the Storeroom building left of the Living Quarters. Use the steam exhaust fan to lift you to the roof. You will need the vine underground at the Hub.
Take it to the vine spot and click space bar to cut the vines. (it is to the left)
First you need to get the vine. It's on a roof all the way to the left of the map. Just use the vine when the monster comes.
The "rope" is a coil of old vine on the roof of the , left of the Living Quarters. You need it underground at the Hub.
In the underground below the Hub, you use it to rope a steam pipe to knock out an attacking monster in the pipes.
You need to get the loop of old vine before entering the underground at the Hub through the hot hatch (cooled by the Robot Crab). The vine is on top of the storeroom building at the far left of the main scene.
When Sprocket is grabbed by the vines at the Captain's Quarters, slam the metal windows shut to cut the vines.
Hi, You use it to pull a pipe of hot steam down to blast a plant/dragon thingy.
its in the museum on mainstreet of steamworks island :)