Twelve Hills Nature Center

Project Title:  Twelve Hills Nature Center
Project Location:
817 Mary Cliff Road, Dallas, TX 75208
Project Website:
https://twelvehills.org

A five-acre nature center established on reclaimed land about twelve years ago. It serves as a place for the local community to access a nature area without driving, and as an outdoor classroom for neighboring schools. It is located in north Oak Cliff, 7 minutes west of the Bishop Arts District.

Volunteers plant native grasses and other native plant seeds, remove invasive plants, maintain and beautify the trails and entrance area. They also lead nature walks and help with school and neighborhood events at the site.

2024 Activities –   51 volunteers with 1,970 hours of service performed

Prairie Restoration:

  • The entire Nature Center, including the prairie and butterfly garden, continues to be managed by adding Backland Prairie plants and seeds and removing introduced and aggressive plants.
  • Workdays are held every Sunday; several volunteers work on the project daily. Workdays are held for a few groups throughout the year. Young Men’s Service League sent volunteers most weeks.
  • Professional tree-trimming was done to remove introduced trees and storm damage.

Education:

  • Mentored a 2024 class project team. The team learned how to restore disturbed land to Backland Prairie. A plant rescue was held to obtain local prairie plants.
  • Hosted Trinity River Crew teen internship. Interns learned about the Backland Prairie ecosystem and participated in a service project. Program is run by Trinity Park Conservancy and GreenSpace Dallas.
  • Nature Leaders was held in the spring. 18 students completed a 14-week program where they learned about the Backland Prairie, outdoor ethics, and how to lead nature walks. They led nature walks for their peers over a period of a week. Many of the class walks were rained out.
  • Walks for St. Cecilia’s Catholic School were held on Nov. 6 and 7. The topic was entomology.
  • Little Bisons, in partnership with Rosemont Early Childhood PTA and Rosemont Primary School was held 6 times in the spring and fall. Nature programs were presented for preschool children and parents.
  • West Dallas Community School families enjoyed a nature walk.
  • We continue to participate in the MathFinders NSF grant, https://gomathfinder.org/ “encouraging students to love math by helping them see it everywhere”.
  • 9 community nature walks were held; they provided AT for NTMN and education for the community.
  • A Second Sunday Spanish Walk was held as a prototype for monthly programs in 2025.

Outreach:

  • Twelve Hills participated in Oak Cliff Earth Day at Lake Cliff Park.
  • Hosted an annual gathering and presentation for the Oak Cliff Gardeners’ Gardens Tour and Plant Swap.

Special Projects:

  • Informational Kiosk
    • A long-awaited project- the creation and installation of an informational kiosk, was realized in June of 2024! The kiosk provides information on the nature center’s history and mission, a map, and information on upcoming events. A public dedication was held June 15.
    • A boulder inscribed with Twelve Hills’ land acknowledgement was installed near the kiosk.
  • A special social media project, the Twelve Days of Twelve Hills was created to educate the public about some of the species at Twelve Hills, the volunteers, and to celebrate 1200 species on iNaturalist.

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December 2, 2025    
9:00 am - 11:00 am
Name: Friends of Oak Cliff Workday Date & Time: Every Tuesday and Saturday 9-11am Location: One of the three parks in Oak Cliff: Kidd Springs,...
December 3, 2025    
9:00 am - 12:00 pm
Western Heights Cemetery Volunteer Day 1617 Fort Worth Ave. Callas, TX 75208 Contact lead: Van Johnson, vanindallas2@aol.com Every Weds, 9am  - 12pm, earlier during summer...
December 3, 2025    
7:00 pm - 8:45 pm
Chapter Meeting Placeholder. A further description monthly meeting will appear here as the scheduled meeting draws near. Join us in north Dallas at Dallas College...
John Bunker Sands Wetland Center || 1st Saturday Walk & Talk Bird Tour (AT) Saturday, December 6, 2025  ||  7:30am – 9:30am   CT Description:  Join...
Dogwood Canyon Audubon Center || 1st Saturday Bird Walk   (AT) Saturday, December 6, 2025  || 8:30am – 9:30am   CT Description:  Join us for a morning...
December 6, 2025    
9:00 am - 11:00 am
Name: Friends of Oak Cliff Workday Date & Time: Every Tuesday and Saturday 9-11am Location: One of the three parks in Oak Cliff: Kidd Springs,...
Heard Museum || Guided Trails (AT) Saturday, December 6, 2025  |  9:30am – 10:30am CT Description: Experience the ecology, geology, flora and fauna of the...
December 9, 2025    
9:00 am - 11:00 am
Name: Friends of Oak Cliff Workday Date & Time: Every Tuesday and Saturday 9-11am Location: One of the three parks in Oak Cliff: Kidd Springs,...
December 10, 2025    
9:00 am - 12:00 pm
Western Heights Cemetery Volunteer Day 1617 Fort Worth Ave. Callas, TX 75208 Contact lead: Van Johnson, vanindallas2@aol.com Every Weds, 9am  - 12pm, earlier during summer...
December 11, 2025    
8:00 am - 3:00 pm
All information and volunteer dates are under this link: https://interland3.donorperfect.net/weblink/weblink.aspx?name=E347204&id=303 Event Name: (see link) Date/Time: (varies, see link) Address: (varies, see link) Description of event...
Event Name: Paschall Park Butterfly Trail Workday (VH) Date/Time: Friday December 12, 2025, 9-11am Address: Paschall Park Butterfly Trail, 1001 New Market Road, Mesquite, 75149...
December 13, 2025    
8:00 am - 11:00 am
Event Name: Trail Maintenance Date/Time: Every Second Saturday of the month from 8am to 11am. Except for July and November. Address: 367 Freeport Parkway, Coppell, TX 75019...
Heard Museum || 2nd Saturday Bird Walk (AT) Saturday, December 13, 2025 ||  8am – 9:30am CT Hosted by the Heard & offered by volunteers...
December 13, 2025    
9:00 am - 12:00 pm
All information and volunteer dates are under this link: https://interland3.donorperfect.net/weblink/weblink.aspx?name=E347204&id=303 Event Name: (see link) Date/Time: (varies, see link) Address: (varies, see link) Description of event...
December 13, 2025    
9:00 am - 11:00 am
Name: Friends of Oak Cliff Workday Date & Time: Every Tuesday and Saturday 9-11am Location: One of the three parks in Oak Cliff: Kidd Springs,...
December 13, 2025    
9:00 am - 11:00 am
Preservation Society for Spring Creek Forest “2 nd Saturday” workdays Sept. 2025/ May 2026 Sept. 13, 2025, 9-11am: -- 1770 Holford Road (the center section...
Dogwood Canyon Audubon Center || Guided Tree ID Walk   (AT) Sunday, December 14, 2025  || 11am – 12:30am   CT Description:  Join us for a guided...
December 16, 2025    
9:00 am - 11:00 am
Name: Friends of Oak Cliff Workday Date & Time: Every Tuesday and Saturday 9-11am Location: One of the three parks in Oak Cliff: Kidd Springs,...
December 17, 2025    
9:00 am - 12:00 pm
Western Heights Cemetery Volunteer Day 1617 Fort Worth Ave. Callas, TX 75208 Contact lead: Van Johnson, vanindallas2@aol.com Every Weds, 9am  - 12pm, earlier during summer...
Heard Museum || 3rd Thursday Bird Walk (AT) Thursday, December 18, 2025 ||  8am – 9:30am CT Description: 3rd Thursday Bird Walks in the Heard...
Project site name changed to Prairie Creek Marsh and Wildscape (formerly Canyon Creek) Monthly workday 1001 G. Bush Freeway ( Hilton Garden Inn) Every third...
John Bunker Sands Wetland Center || 3rd Saturday Guided Boardwalk Tour (AT) Saturday, December 20, 2025 ||  9:00 AM – 10:30 AM    CT Description:  As...
December 20, 2025    
9:00 am - 11:00 am
Name: Friends of Oak Cliff Workday Date & Time: Every Tuesday and Saturday 9-11am Location: One of the three parks in Oak Cliff: Kidd Springs,...
December 21, 2025    
9:00 am - 11:00 am
LLELA || Thrive Nature Walk –(AT) Sunday, December 21, 2025 | 9am – 11am   CT Description:  Sights of plants and wildlife, smells of fresh air...
December 21, 2025    
9:00 am - 10:30 am
LLELA || Nature Walk  at Thrive(AT) Sunday, December 21, 2025  ||  9am  – 10:30am   CT Description:  Sights of plants and wildlife, smells of fresh air...
December 23, 2025    
9:00 am - 11:00 am
Name: Friends of Oak Cliff Workday Date & Time: Every Tuesday and Saturday 9-11am Location: One of the three parks in Oak Cliff: Kidd Springs,...
December 24, 2025    
9:00 am - 12:00 pm
Western Heights Cemetery Volunteer Day 1617 Fort Worth Ave. Callas, TX 75208 Contact lead: Van Johnson, vanindallas2@aol.com Every Weds, 9am  - 12pm, earlier during summer...
December 27, 2025    
9:00 am - 11:00 am
Name: Friends of Oak Cliff Workday Date & Time: Every Tuesday and Saturday 9-11am Location: One of the three parks in Oak Cliff: Kidd Springs,...
Trinity River Audubon Center || Sunday Morning Bird Walk (AT) Sunday, December 28, 2025  ||  9am  – 10am   CT For more info & to register:...
December 30, 2025    
9:00 am - 11:00 am
Name: Friends of Oak Cliff Workday Date & Time: Every Tuesday and Saturday 9-11am Location: One of the three parks in Oak Cliff: Kidd Springs,...
December 31, 2025    
9:00 am - 12:00 pm
Western Heights Cemetery Volunteer Day 1617 Fort Worth Ave. Callas, TX 75208 Contact lead: Van Johnson, vanindallas2@aol.com Every Weds, 9am  - 12pm, earlier during summer...
January 3, 2026    
9:00 am - 11:00 am
Name: Friends of Oak Cliff Workday Date & Time: Every Tuesday and Saturday 9-11am Location: One of the three parks in Oak Cliff: Kidd Springs,...
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