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 and can provide tailored sessions for individuals, schools, colleges and youth groups


Don't miss out

Picture of Junior May Half Term

Junior May Half Term

  • HYMB Junior Membership is no longer required
  • Land and water based activities available
  • Full week for £120
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Picture of Girls Outdoors

Girls Outdoors

  • Outdoor Activities especially for females aged 8 and Adults
  • An ideal opportuntity for mothers and daughters to do activities together.
  • Get fit whilst having fun!
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Picture of Adult Activity Club

Adult Activity Club

  • For Adults
  • Perfect for those wanting to practice thier skills
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