Original: Soon after Gustav made landfall in Cuba , firstly on the island of Isla de la Juventud and later on the mainland near Los Palacios in Pinar del RÃ o Province , causing catastrophic damage , although it was difficult to estimate it ; damage was later estimated at 3 billion dollars ( 2008 USD ) .
Simplified: Soon after Gustav made landfall in Cuba , firstly on the island of Isla de la Juventud and later on the mainland near Los Palacios in Pinar del RÃ o Province , causing severe damage , although it is difficult to predict how much damage it caused .