Chains of Asmodeus - Lack of Playable maps?

In trying to play Chains of Asmodeus , it seems that there are not enough playable maps to work well with Roll20. For example, with the Ruined Tower (W2), there are several encounters listed as the players enter and climb the tower, prior to reaching the throne room. The only battle map is of the throne room, with a large picture of the tower. Am I missing something, or has anyone else made supplemental battle maps for this adventure?  

Hi Knichiez,  It is common for published adventures to have encounters without a pre-generated battle map. It has always been like this, long before Virtual Tabletops became a thing.  How the Chains of Asmodeus adventure handles that is the "Generic Battle Map". Most adventures converted to Roll20 have something similar.  With that said you should see 29 pages. Not all of them will be maps, some will be token storage, starting page for the players to sit on, etc.