Tough Mudder continues #ObstacleWeek counting down the top five fan-favorite obstacles. Today coming in at #1 is Blockness Monster, the rolling obstacle that takes more than one person to succeed. It takes a team to get the block spinning and your team over each one in the watery pit. Enjoy your favorite and some never before seen moments from the obstacle. Today is all about Blockness Monster at #ObstacleWeek.