Well is a basic Control Point map with 5 control points. At the start of the round there are 2 Blu and 2 Red points and in the middle there is a neutral point which can be taken by either team. The team that takes control of all the points wins the round.
The train is a map mechanic only used on this map. The train will drive back and forth randomly inside near the middle point and you can be killed if you are ran over by it.