As you wander around the many planets of Planet Crafter, you’re guaranteed to run into some frozen caves. To access those, you’ll need to melt the ice blocking the entrance, but with the tools you have, it seems like there’s no way to do that.
How to Melt Ice Blocking the Cave’s Entrance in The Planet Crafter
In order to melt the ice, you’ll need to increase the planet’s heat level by terraforming it. This can be done by building heaters on that planet’s surface. Most cave entrances melt after the temperature reaches 100 nK, but there are a couple of caves that require less heat.
Keep in mind that a lot of the Ice Caves have a huge amount of resources needed to build more heaters, such as Iridium, so try to melt at least one cave entrance before you start heating another planet.
Ice Caves in The Planet Crafter
Here is the full list of Ice Caves in The Planet Crafter, with their respective coordinates: