For people who has played golden sun

i know this is the DS board but the GBA board no long exsists, so i though this is the best place to post this

i jsut got out of the desert with the oasis, and i went back to the valt to get the veus djin, i fed the dog the bone, and used reveal near the grave stones, the whole does not apear, so i cant go under ground, then i rang the bell, and tried reveal again near the grave stone circle, but still nothing. whats going on, is my game glitched?

im playing this on the DS is it makes a difference.