> Dragon teeth alone won't hold against a tank for more than a few minutes This doesn't seem accurate. While searching for a video that shows a tank trying to

> Dragon teeth alone won't hold against a tank for more than a few minutes This doesn't seem accurate. While searching for a video that shows a tank trying to go over (unsuccessful), I found a video showing three ways to get over them, and only the explosives would take a few minutes: https://www.youtube.com/watch?v=cRld768HDyc https://www.youtube.com/watch?v=cRld768HDyc Anchored concrete blocks can be made more difficult to move than the dirt under the tracks.