Posted by a reviewer on Amazon

Note that the end terminates in an openended track

Posted by a reviewer on Amazon

This kept our engineer age 5 transfixed for about two solid weeks

Posted by a reviewer on Amazon

Even the track parts that look almost identical to other similarly shaped track parts are not quite identical so theyre not good for much besides what you see in this picture

Posted by a reviewer on Amazon

So you cant add any more pieces in the middle of the spiral or extend the spiral at either end

Posted by a reviewer on Amazon

And frankly the original design isnt supersturdy to begin with

Posted by a reviewer on Amazon

Some of the supports loosen up and come apart if you look at them funny and if you have a little engineer stomping around the room expect frequent service calls

Posted by a reviewer on Amazon

If a train goes up the hill rather than down the hill the weight sometimes dips the track far enough down before the joint that the rest of the incline becomes too steep to travel and they get stuck

Posted by a reviewer on Amazon

The curved pieces need to be connected together and not compatible with other pieces