REMOVE

1. volcanic ash, lime coating, …
2. Paintings
3. 750
4. 600
5. Mexico

WHAT

1. Mural (1)
2. volcanic ash, lime coatin … (1)

WHERE

1. Mexico (1)
2. North American; Central A … (1)

WHO

1. Fine Arts Museums of San … (1)
2. Unknown (1)

WHEN

1. 600 - 750 (1)