How i can fix break ground?

[th0wnax]

Hello Guys,

I get in the game always the message "breakthrough terrain" ... How can i fix this? Is there an explanation and solution for this?
Do I need to research something? It comes in the challenging mode this message with certain lanes.

Thanks and best regards,

th0wnax

 

[Sim Park Observer]

Hello Guys,

I get in the game always the message "breakthrough terrain" ... How can i fix this? Is there an explanation and solution for this?
Do I need to research something? It comes in the challenging mode this message with certain lanes.

Thanks and best regards,

th0wnax

Never heard of this message before. Do you get it in Sandbox or during career/challenges?