Museum hosts Rockin' Pop-up: all geology questions and curiosities welcome.

The Santa Cruz Museum of Natural History will host its monthly Rockin' Pop-up, where two UCSC geology grad students will identify any rocks visitors bring in, Saturday September 22, 10 a.m. to noon, and show off a rotating collection of specimens. All geological curiosities and questions welcome. Free with admission, free for kids. Every fourth Saturday of the month. Info at www.santacruzmuseum.org. 1305 East Cliff Drive, Santa Cruz. Free with admission ($4 adult, $2 students + seniors), free for kids.