46333 05/13/2010 09:40 AM entrance to 28th and Dryden District on N side of Upas St 46334 05/13/2010 09:41 AM entrance to 28th and Dryden District on N side of Upas St 46335 05/13/2010 09:41 AM entrance to 28th and Dryden District on N side of Upas St 46336 05/13/2010 09:41 AM looking W on Upas St at 28th St 46337 05/13/2010 09:41 AM looking roughly SW on Pershing Dr at 28th & Upas 46338 05/13/2010 09:41 AM looking S on 28th St at Upas St 46339 05/13/2010 09:42 AM 1998 plaque on sidewalk at 46335 46340 05/13/2010 09:42 AM N facing plaque at 46335 46341 05/13/2010 09:42 AM N facing plaque at 46335 46342 05/13/2010 09:42 AM N facing plaque at 46335 46343 05/13/2010 09:42 AM N facing plaque at 46335 46344 05/13/2010 09:42 AM looking S on 28th St at Upas St 46345 05/13/2010 09:44 AM entrance to Bird Park near 28th & Upas 46346 05/13/2010 09:44 AM entrance to Bird Park near 28th & Upas 46347 05/13/2010 09:45 AM looking S along path through Bird Park next to 28th St 46348 05/13/2010 09:45 AM American Goldfinch etched into pavement on 46347 46349 05/13/2010 09:49 AM Switzer Canyon trailhead at 28th St and Maple St 46350 05/13/2010 09:50 AM path and golf course beyond 46349 46351 05/13/2010 09:51 AM path at bottom of hill in 46349 46352 05/13/2010 09:51 AM side path into Switzer Canyon at 46351 46353 05/13/2010 09:52 AM path beyond 46352 46354 05/13/2010 09:53 AM path beyond 46353 is in rock-filled stream bed 46355 05/13/2010 09:53 AM path beyond 46353 is in rock-filled stream bed 46356 05/13/2010 09:55 AM flowers growing in stream bed near 46354 46357 05/13/2010 09:58 AM W end of culvert in Switzer Canyon under 30th St 46358 05/13/2010 09:58 AM W end of culvert in Switzer Canyon under 30th St 46359 05/13/2010 09:59 AM W end of culvert in Switzer Canyon under 30th St 46360 05/13/2010 09:59 AM W end of culvert in Switzer Canyon under 30th St with knapsack for scale 46361 05/13/2010 10:02 AM Switzer Canyon from hill just N of 46360 46362 05/13/2010 10:02 AM R of 46361 46363 05/13/2010 10:02 AM R of 46362 46364 05/13/2010 10:12 AM looking N along trail near mouth of Switzer Canyon 46365 05/13/2010 10:12 AM looking S along trail near 46364 46366 05/13/2010 10:13 AM trail S of 46365 passes through wooded area 46367 05/13/2010 10:14 AM trail beyond 46366 goes uphill over small gully 46368 05/13/2010 10:14 AM trail beyond 46366 goes uphill over small gully 46369 05/13/2010 10:20 AM entrance to Grape Street Park dog area 46370 05/13/2010 10:20 AM looking S on 28th St near 46369 46371 05/13/2010 10:23 AM trail ascends S side of canyon beyond 46370 46372 05/13/2010 10:29 AM unpaved alley on W side of 28th St at S end of Balboa Park 46373 05/13/2010 10:30 AM detour around gully at end of alley in 46372 46374 05/13/2010 10:30 AM detour around gully at end of alley in 46372 46375 05/13/2010 10:33 AM looking W on Russ Blvd at 26th St 46376 05/13/2010 10:48 AM Tweet Street Park at Ninth Ave and Date St 46377 05/13/2010 10:49 AM close-up of street signs in 46376 46378 05/13/2010 10:49 AM close-up of sign in playground in 46376 46379 05/13/2010 10:50 AM looking W in Tweet Street Park 46380 05/13/2010 10:50 AM post and interpretive signs in Tweet Street Park at Date St and Eighth St 46381 05/13/2010 10:51 AM post and interpretive signs in Tweet Street Park at Date St and Eighth St 46382 05/13/2010 10:52 AM dog rest area just W of 46381 46383 05/13/2010 10:53 AM sidewalk along edge of I-5 right of way fence from Date St and Seventh St to Sixth St 46384 05/13/2010 10:57 AM SW corner of Balboa Park near Sixth Ave and Elm Ave 46385 05/13/2010 10:58 AM plaque for flagpole erected by Freemasons in parking area near 46384 46386 05/13/2010 11:20 AM Sixth and Upas Trailhead in NW corner of Balboa Park 46387 05/13/2010 11:24 AM path from Seventh and Upas to bridge over C-163 46388 05/13/2010 11:26 AM path from Seventh and Upas to bridge over C-163 46389 05/13/2010 11:26 AM bridge over C-163 on N side of Balboa Park 46390 05/13/2010 11:29 AM bike/ped path E of 46389 46391 05/13/2010 11:30 AM bike/ped path E of 46389 46392 05/13/2010 11:34 AM Upas St descends to Florida Dr and steep sidewalk ascending E side of Florida Canyon 46393 05/13/2010 11:36 AM close-up of sidewalk in 46392 46394 05/13/2010 11:36 AM path at SW corner of Florida Dr and Upas St 46395 05/13/2010 11:36 AM path at SW corner of Florida Dr and Upas St