On PBS Stations This Week March 22-28, 2020

Rock Art Reborn, Lake Mineral Wells, Purple Martins

See how scientists are using laser technology to preserve Hueco Tanks rock art. The waters of Mineral Wells, west of Fort Worth, have long lured visitors. Relaxation at a lakeside state park is more the draw than the historic spas today, but entertaining exercise is also an option. Meet some landlords looking out for their tenants at a small high-rise condo complex that's completely for the birds.

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