According to Presidio's map it's 1.5 miles but that also includes the Ecology trail, El Polin…read moreSpring and starting at Crissy Field Beach. By itself it's much shorter. Tennessee Hollow is a path along a watershed and it's better in the winter when there is water in the creek. There's a parking lot off Presidio Blvd that faces the trail. Parking $2.50 per hour. This is nice place to sit in the car with lunch while looking at open space. The main part of the specific Tennessee Hollow is the path between Presidio and Lincoln then cross the street between Lincoln and Gorgas. There are a lot of birds, plants, and flowers in the watershed. I'd recommend going to the Tunnel Tops park afterwards.

** The following review reflects my experience DURING the COVID-19 pandemic. **…read more I don't know what a 'hollow' is, but then again, I don't understand what a lot of things mean. I'm assuming Tennessee Hollow refers to the valley that this trail follows in the Presidio. Otherwise it's my brain that must be hollow because I have no explanation for the Tennessee part of the name. All I know is that it's a two-mile route that I walked north to south and back again. I started at the Crissy Field Marsh on the Golden Gate Promenade. That's where I crossed a couple of footbridges through the newly excavated Quartermaster Reach Marsh (photo: https://bit.ly/3cyrZ51). There wasn't much to see here yet except the underpass of the Presidio Parkway. I eventually made it to Lovers' Lane Bridge which didn't strike me as a spot for a romantic tryst (photo: https://bit.ly/3eIdnmr). I walked along the residential MacArthur Avenue until I found myself at the legendary El Polin Spring. Lots of kids were frolicking around the stone wells (photo: https://bit.ly/2PYDGdH). I climbed up to the Ecology Trail passing by a redwood grove (photo: https://bit.ly/38EjX9Y) and made my way back by taking a detour through the Main Post. It was a pleasant walk, quite scenic in parts though heavy on pavement for some stretches, but a good way to get acquainted with this hollow...or maybe it's a watershed. It doesn't matter because I don't know what 'watershed' means either. RELATED - Up for a hike? Here's a collection of trails I've walked and reviewed: https://bit.ly/2OrC8nUl

If you're not familiar with this Trail, the San Francisco Bay Trail has a lot of different…read moresegments. They aren't all connected yet, so you can sort of pick and choose which segment you want to go on. The trail is designed and maintained by a lot of wonderful volunteers, who do this as a labor of love. So special kudos to all those wonderful volunteers! Today, I hiked the Trail section at the Hamilton Wetlands. It's pretty easy to get to and the trail is well maintained. However, I did not see any drinking faucets, and there were just a few out houses. Many of the trails are excellent for young families. Today, I saw a ton of families, even with little kids riding bikes with training wheels. At the Hamilton Wetlands, keep in mind that the internet is almost nonexistent. This proved to be a big disappointment, since I wanted to run some of the Vizzit places audio tours. But I had to give up on that. Nevertheless, the San Francisco Bay Trail is a wonderful project, with a ton of places to visit. I recommend you try different segments that are appealing to you. Don't forget to check out the Vizzit application, which has audio tours for some of their segments.

It's truly magical out at this point. I find it very meditative to look out at the scenery. Lots of…read morebirds, gulls, just the sound of the ocean. Can see Dillon Beach, Bodega Bay, Tomales Bay, and the abyss of the Pacific Ocean. It's no easy feat to get here, 2-mile hike in then 2-miles back. I think it's worth it but it's not for someone that wants a short easy viewpoint.

Tomales point is beautiful. The trail to get there is fantastic. read up on the geology of Tomales…read morepoint and you'll love it even more. It's all about tonalite.

Easy in and out, old fire road .Dense and secluded. Easier to approach from behind the school.read more

Trail starts from pullout just south of pullout with call box, then branches left to stay low…read more Some slippery wading and climbing over and under large blowdowns. Trail still collapsed near the end and very tenuous and exposed.

Very soothing and tranquil spot to hike. Great views of the bay. Not too far. Good for families.read more

The hiking trails above Tennessee Valley in Mill Valley over to Muir Beach offer some of the most…read morespectacular scenery you'll find anywhere in the world. Coyote Trail which loops over to the Green Gulch and Miwok trails offer 360-degree panoramic views of the Pacific Ocean, Golden Gate Bridge, San Francisco, the East bay, Mount Tamalpais and Mill Valley. It is especially beautiful during springtime with the many varieties of colorful wild flowers that dot the hillsides. Scurrying quails, soaring hawks, abundant butterflies and the occasional bobcat (not to worry as they are quite skittish) are common companions on the trails. A great alternative to the many shaded redwood trails if you're looking for warmth and sunshine. http://gurmeet.net/hiking/hikes/Muir_Beach_To_Tennessee_Beach_Long_Loop.html

Husband and I heard about this trail from a friend and decided to do it today. This is an easy,…read morerelatively flat trail that is also quite wide, though somewhat rocky. We passed kids with their moms, older couples, dogs, and, and a couple of joggers, but the trail never felt busy or crowded. The path goes East-West and gives beautiful views of Terra Linda, San Anselmo, and even a little bit of San Francisco is the day is clear enough. We didn't have a lot of time, so when the trail broke off into a few different directions at about the .75 mile mark, we turned around to go back to the car. The trail was a bit muddy but was a very nice quick walk. Please be considerate as you are parking in a neighborhood; drive slow and maybe try to keep your voice down. We noticed that some of the driveways have parking blocks to prevent people from turning around in their driveways.

ACCESSING JEWELL TRAIL. On two occasions in February 2021, I hiked the loop trail consisting of…read moreBolinas Ridge Trail, Jewell Trail, and Cross Marin Trail. My hike was in the counterclockwise direction around this loop trail. The final stretch of this loop hike requires hiking within the narrow space between the Francis Drake Blvd. and a steep downhill slope covered with trees and with lichens called "old man's beard." Jewell Trail has two trailheads. One is located on Bolinas Ridge Trail and the other is on Cross Marin Trail. The trailhead for Bolinas Ridge Trail is next to Francis Drake Blvd., one mile east of Olema. The trailhead on Cross Marin Trail, is situated one mile to the northwest of the Camp Taylor campground. Regarding the Bolinas Ridge trailhead a mile east of Olema, typically between five and ten automobiles are parked here. They're parked on the south shoulder of Francis Drake Blvd., but additional parking places are available on a wide dirt shoulder, across the street and 50 feet to the west. The segment of Bolinas Ridge Trail leading to the Jewell Trail Trailhead provides scenery of amazing beauty. The photographs in the following list describe, by way of pictures, everything that I could possibly describe with words about Bolinas Ridge Trail and Jewell Trail: (1) Photo of wooden maze that allows passage of people, but prevents cows from passing through. The body of the cow is not flexible in the same way that snakes are flexible. If cows were flexible, they could be taught to dance the hula. But cows are unable to do hula dancing. Because cows are not flexible, they cannot pass through the wooden maze. (2) On the left side of Bolinas Ridge Trail, you can see a cluster of trees sitting on a hillock, with a row of stones embedded in the hillock. This hillock occurs about 100 feet down a grassy slope. (3) Same cluster of trees sitting on a hillock, where photo shows a tree coated with "Old Man's Beard" lichens. (4) To the right of Bolinas Ridge Trail is a deep valley. The boulder at the far left has lichen clinging to it. (5) On the right side of Bolinas Ridge Trail is a tall boulder with a stone shelf on it. On this stone shelf, I posed my mountain goat. While taking this photograph, a man and woman, in their 20's, were hiking by. I turned to them and said, "Don't worry, my permit for keeping the mountain goat is all paid up." They responded with a flurry of laughs. (6) Same boulder, with both Strawberry Shortcake and the goat. (7) Photo of deep valley to left of Bolinas Ridge Trail. Jewell Trail is just beyond this valley. (8) Photo of the sign at the trailhead for Jewell Trail. Two men were approaching, riding their mountain bikes. I was impressed by their ability to ride up the steep hill and I said, "You are certainly strong and powerful, but I know you are vulnerable to KRYPTONITE." They understood my joke and laughed. (9) After a minute of hiking down Jewell Trail there's a huge boulder to the right. Photo of the goat, California quail, and northern flicker sitting on this boulder. (10) Further down Jewell Trail, view looking uphill at the beautiful upper part of the valley. (11) Same location by Jewell Trail, with view looking downhill. Francis Drake Blvd. can be seen in the distance. (12) Further down Jewell Trail, the forest begins. Goat and Strawberry Shortcake stand near a zig-zag in the trail. (13) Further on down, the trail enters a shady area, covered with a tunnel of trees. I arranged a fallen white-colored branch, possibly from a birch tree, so that it would show up in the photograph. (14) Photo of a mossy tree covered with a few tiny ferns, located next to Jewell Trail. LICHENS. In many areas of your hike, you will find lichens hanging from trees and lichens growing on rocks. The kind of lichen that hangs from trees is "old man's beard," also called beard lichens of the genus Usnea. Photographs of beard lichens are available from, "pointreyesnature dot com/alamea-trail" and also from Kundsen and Carlberg (2005). Other kinds of lichen at Bolinas Ridge include Rimularia insularis and Rinodina falvosoralifera. Colorful lichens that grow on rocks include, Xanthoria elegans, Rhizoplaca melanopthalma, and Saxicolous lichens. REFERENCES. ( 1 ) K. Knudsen and T. Carlberg (2005) Bulletin of the California Lichen Society. Vol. 12, No. 2, page 36. ( 2 ) Tom Carlberg (2012) Bulletin of the California Lichen Society. Vol. 19. See, page 27. ( 3 ) Larry St. Clair (1999) Bulletin of the California Lichen Society. Vol. 6, No. 2. ( 4 ) Kocourkova (2012) A Checklist of the Lichenicolous Biota of California Opuscula Philolichenum. 11:64-103. ( 5 ) Lichens, surprising pioneering organisms (2019) Encyclopedia of the Environment. ( 6 ) Article by Sheela McLean, available from: "methownet dot com/grist/features/lichens.html

How much more beautiful can this state be? I swear there's like a hidden treasure in every part…read morethat I seem to visit. And, the Tomales Bluffs are absolutely NO exception to this. Tucked away at the end of the Tomales Bay Trail lay the most enchanting and ferocious bluffs beneath the mountain side. The views from the top of the mountain are gorgeous, but the view from the bottom of the mountain are even more spectacular. You will have to embark on a 4.7 mile hike just to get there. But believe me when I say that it's completely worth the 9.5 mile hike that you'll have to endure. The hike to the bluffs is a beauty in itself, but the real rewards is getting down to that gorgeous ocean. It'll feel like you're in another world. All you'll be able to do is look... and enjoy. Enjoy all the beauty that will surround you, from the steep mountainous cliffs to the shallow waters that hug the coastline. Watching the waves crashing against the rocks was almost numbing for me. It provided the greatest sensation after hiking almost 5 miles to get there. So many birds, so many waves, and so many incredible views. The wind on my face felt so wonderful. Pack a lunch and some water when you go so that you can enjoy your lunch with a glorious view. It would only makes sense to savor as much of this moment as possible while you're there. If you're heading to Tomales Bay and have some extra time to spend, I would highly recommend the hike to the Tomales Bluffs. It's an experience that you'll be sure to never forget.

Simply beautiful. The hike is relatively flat though you might traverse over 600 ft of elevation…read morechange along the way on this 4.7 mile (one way) trail. But it's not as easy because of the sand (where did that come from, seriously?) stretch along the way that makes it that much harder to walk through. I saw some folks on horseback so if you got the quadrupeds, bring them along!