This page of the Snowrunner support describes how to unlock the Quarry map in Taymyr, Russia.
When exploring the Russian locations, you will learn, that access to some areas is blocked. To move to the Quarry, you have to complete two missions in Drowned Lands:
Activate Geological Exploration in Drowned Lands, Taymyr, Russian Federation.
Choose a fairly wide and stable truck. Equip it with the seismic vibrator. The device is free.
Your objective is to find three spots: in the north, south, and west. There are no tips on how to reach them, apart from the meter gauge in the top corner. When you're within the 150m range, you'll hear a loud beeping noise. When it settles, and you are within the 15m range, you can start scanning the area with the seismic vibrator. You can look at the spots on your own or take a look at the solution below, where we show where to look.
Upon reaching a spot, just go to the function menu and choose "start seismic vibrations".
Looking Beyond The Horizon
The "Looking Beyond The Horizon" task in Drowned Lands is not complicated. You need to deliver three cargos to the Radio Tower, namely 1 metal beam, 2 service parts, and 1 cargo container. When selecting a cargo, you will see on the map where you can load it.
Activate the Looking Beyond the Horizon task.
After completing it, the Quarry gate will be unlocked.