surface(N)
[superfície]
/ˈsɜː.fɪs/ /ˈsɝː-/ n
[C] the outer or top part or layer of something

erode (V)
[erosionar]
/ɪˈrəʊd/ /-ˈroʊd/ v [I or T]
to rub or be rubbed away gradually

Gradually(a)
[gradualment]
/ˈgræd.jʊ.li/, /ˈgrædʒ.ʊ.li/ adv
slowly over a period of time or a distance
Gradually, she realized that he wasn’t telling her the truth.
The bank slopes gradually down to the river.

Underground: (a.v)(per sota terra)
[]/ʌn.dəˈgraʊnd/ /-dɚ-/ adj adv
below the surface of the Earth

huge (a) (enorme)
/hjuːdʒ/ adj
extremely large in size or amount

soften (v) (suavitzar)
/ˈsɒf.ən/ /ˈsɑː.fən/ v [I or T]
to become soft, or to make something soft
You can soften the butter by warming

SONGS
You belong with me

http://www.youtube.com/watch?v=Vt6LeMBLGts&feature=related

VIDEO
http://video.yahoo.com/watch/1794382/5933084
The video is about erosion