According to the article "ill-equipped rescuers dig out volcano victims; air slow to reach colombian town," why were there limited supplies and few rescue workers on scene?

There are limited supplies and few rescue workers on the scene because The village was remote and difficult to access.
Due to lack of accessibility, the rescue workers unable to follow the normal procedure that they've been trained into, causing the delay in arrival and shortage in supplies.

I'm pretty sure that's called a volcano