In the heart of San Francisco, near the Castro Theater and Corona Heights, there's a rock wall with a striking appearance. Listener Ravi Bhoraskar stumbled on it and wondered why the rock has a shiny, almost wet-looking appearance. And as a new convert to rock climbing, he also wondered if he could climb it. We dig into the history of urban climbs like this one and how they helped put the Bay Area at the forefront of rock climbing innovation. And don't worry, we'll do some climbing too!Additional Resources: The San Francisco Rock Climbing Spot Known For Its Shiny Surface Read the transcript for this episode Sign up for our newsletter Got a question you want answered? Ask!Your support makes KQED podcasts possible. You can show your love by going to https://kqed.org/donate/podcastsThis story was reported by Francesca Fenzi. Bay Curious is made by Katrina Schwartz, Christopher Beale and Olivia Allen-Price. Additional support from Jen Chien, Katie Sprenger, Maha Sanad, Ethan Toven-Lindsey and everyone on Team KQED.Learn more about your ad choices. Visit megaphone.fm/adchoices