Alan Kwan wrote:
When one explores and draw a non-volcano, it is placed in the target hex; while a volcano must be placed in another hex, and then another tile drawn until a non-volcano is placed in the target hex.
If someone is holding some resources and tries to head towards grass spaces, normally he should be able to reach the place using the max of three explorations allowed per turn. Thus the situation you described is not only statistically unlikely, but also it should normally be resolved by someone opening a path between the two areas.
2 new players. Neither had any idea they could lock up the game.
Yes, players should NEVER do this by choice, but it is VERY possible.