Tamoguna introduces tamas as inertia within the board's three-guna framework. Here, the image asks about a tendency to remain in a familiar state after the conditions around it have changed.
Square 72 is the last numbered position, not the end of the game. Its snake returns the player to 51, Earth. From there, a roll of three reaches 54 and its arrow to 68. Reaching 72 also does not mean you have visited every earlier square; snakes, arrows and dice skip many positions.
For reflection, consider what makes a new beginning difficult. There may be a habit to change, a practical obstacle to address or a need for support. Starting again can make use of what you already know.