Hertfordshire's outdoor education centre

Herts Young Mariners Base outdoor centre, known as HYMB, has been delivering high quality outdoor education sessions to adults and young people for over 50 years.

We offer a variety of adventurous outdoor activities to anyone aged eight and over. We can provide tailored sessions for individuals, schools, colleges and youth groups


Featured Activities

Picture of Junior February Half Term

Junior February Half Term

  • 2017 Holiday program
  • HYMB Junior Membership required
  • Full week just £80
  • Land and water based activities available
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Picture of Winter after school club archery

Winter after school club archery

  • Dry land based activity for winter
  • Floodlight range
  • HYMB Junior Membership required
More Info