Friday, March 25, 2022

Renovating Autumn Hill Trails

This year we've set out to improve the trails at Autumn Hill Reservation. The Friends of Herrontown Woods has used a similar approach at Herrontown Woods with success.  

The aim is to reroute a few of the trails to minimize muddiness and highlight some of the features that would otherwise go unseen, such as these four big boulders that got lifted up into the air by a tree's rootball as it fell. 



This old quarry site is hidden just fifteen feet from one of the trails. Click on the image and look closely to see the drill marks they used to split the boulder into chunks to haul away. That would have been about a century ago.

One thing we'd rather hikers not encounter is the ponding in some existing trails in late winter. Winter, when leaves have fallen and the woods is flooded with light, is the best time to search for better trail routes. In this case, we found higher ground running along an overgrown rock wall just a few yards to the left. 

If we didn't get around to moving the trail years ago, it may have something to do with the incredibly dense tangle of invasive shrubs--autumn olive, Linden viburnum, privet, and worst of all, thorny multiflora rose. It took four work sessions to cut through the thicket that not only blocked access to a better trail route but also obscured part of the preserve's history--the rock walls that once bordered farm fields. 


The fishhook-shaped thorns on multiflora rose punish anyone who thinks they can overcome this formidable, sprawling shrub with brute force. It takes a patient, even gentle approach to navigate through all the thorny branches to cut the shrub at the base. Even then, the thorns prove unavoidable. Anyone who forgets their work gloves will pay. 

There's a payoff, though, for all the hard work of cutting through fallen trees and clearing invasive shrubs. Mixed in with the invasives are some native spicebush, high bush blueberry, and flowering dogwood. It's satisfying to rescue these from the burden of invasive overgrowth. 

A few more work sessions and visitors to Autumn Hill will be able to better experience the preserve's historical and natural features while walking on drier ground.

Saturday, March 12, 2022

A Geology Walk at Herrontown Woods (POSTPONED)

POSTPONED DUE TO PROBLEMATIC WEATHER
On Sunday, March 13, Princeton geology professor emeritus Lincoln Hollister will lead a guided walk through Herrontown Woods explaining the geological features and history of the area. If you thought the boulders were deposited by a glacier, you're in for a surprise.

The walk is at 1pm. A limited number of spots are available. Click here to sign up.

Next time you walk the yellow trail, notice how the boulders along the stream start out squarish, but become more rounded as you head up onto the ridge. These two shapes were produced in different geologic eras.