Zapotec weaver Alex Martinez of Teotitlan del Valle, Oaxaca, demonstrates weaving and dyeing techniques from 10 a.m. to 4 p.m., Thursday through Saturday, Nov. 17 through 19; free with admission. Park hours are 8 a.m. to 5 p.m., daily; $7, $5 senior or active military, $3 student with ID, $2 age 5 to 12, free younger child. Call or visit tohonochulpark.org for information.