Chula Vista

Huh? He didn't use Drop D which is where just the low E is tuned down.

DADGBE

He was famous for using alternate tunings though, the most notable ones being - with one song example:

DADGAD - Kashmir

DGDGBD - That's the Way

EAEAC#E - In my Time of Dying

DGCGCD - The Rain Song

CACGCE - Friends

DADGBD - Going to California

__________________

“The fact that we live at the bottom of a deep gravity well,
on the surface of a gas covered planet going around a nuclear fireball 90 million miles away
and think this to be normal is obviously some indication of how skewed our perspective tends to be.”