This is such a great idea. Looks like it would be fun to experience in-game!

 awh good

 That sounds like a game I'd really like to play. I'm faving this

Walls are tough to damage, but with the right equipment - like an explosive - you'll be able to batter them down. You could gain access to a hidden chamber, or bypass part of the map. In a wilderness setting, rock walls may contain valuable ores... there's a lot of ideas we're toying with.

Thanks for the question, Jim!

 sounds ambitious, looks awesome.

Will there be a gameplay advantage to making the walls a little more 'rustic'?