REMOVE

1. Paintings
2. mural
3. Mexico
4. Fine Arts Museums of San Fra …
5. Unknown

WHAT

1. volcanic ash, lime coatin … (1)

WHERE

1. North American; Central A … (1)

WHO

1. Fine Arts Museums of San … (1)

WHEN

1. 600 (1)
2. 600 - 750 (1)
3. 750 (1)