Snow obstructed caves in the new mountains

In the new mountains, there could be caves that have their entrances
partially or completely obstructed by powdered snow.
This would enhance the feeling of being in a snowy biome,
and create the effect of the snow slowly filling in the gaps on the landscape (here: cave entrances)
It would create the illusion of the game being a bit more alive.

The player has to dig or walk through the snow to get into these hidden caves.
Since powdered snow has a slightly different texture than normal snow,
it would be possible but difficult to spot these cave entrances.

The player could even be rewarded if it founds one of these hidden caverns, with for example:
a bit bigger ore patches or some sort of small dungeon.
In the case of the dungeon the reward wouldn't be the loot, but more like the adventure and the discovery.

I think this little detail to the world generation would really suit the game and the new mountain biomes.