Knock Farril Fort

A long vitrified rampart crowns Knock Farril, preserving one of the Highlands’ most dramatic later-prehistoric defended settlements.

Quick facts

Date
Later prehistoric, probably Iron Age; chronology remains debated
Architect / designer
Prehistoric community; builders unknown
Type
Vitrified hillfort with associated enclosures and lookout sites
Designation
Scheduled monument (SM1672)
OS grid reference
NH 50496 58527

Architecture, archaeology and continuing use

The elongated summit enclosure measures roughly 116 by 30 metres. Heat fused parts of the stone rampart into vitrified masses, while outer enclosures and nearby lookout positions indicate a complex rather than a single wall.

Its story

Communities fortified the ridge in later prehistory and at some point subjected its wall to intense burning. Early excavation and later survey improved understanding, but the causes and exact sequence of vitrification remain disputed.

Why it is included

The scheduled fort is nationally important for its surviving fabric, landscape command and research potential into Highland power, settlement and monument destruction.

What to notice

  • Glassy or fused stone within the ruined rampart.
  • The long enclosure following the summit shape.
  • Associated terraces and earthworks beyond the main wall.

Reading the surroundings

The route involves exposed hill ground. Check weather, wear suitable footwear, keep dogs under control near livestock and never remove vitrified stone.

Timeline

  1. Later 1st millennium BC A defended settlement was established on the ridge during the Iron Age.
  2. 1777 John Williams investigated the vitrified wall during early antiquarian study.
  3. 1969 The fort was scheduled as a monument of national importance.
  4. 1997 Amended documentation clarified the protected fort and associated features.

What we know — and what remains uncertain

The fort’s occupation dates and the motive for vitrification cannot be stated precisely without further archaeological evidence.

Sources & further reading

Location

reviewed Scotland’s Architecture record small badge = designation

OS grid reference NH 50496 58527 · Location confidence: High: the national designation supplies an official mapped National Grid Reference; the independent source confirms the Place relationship, history or current identity. · Select the marker to open its satellite view in Google Maps. On desktop, drag Pegman (the yellow figure) onto a blue road. On mobile, turn on the Street View layer and tap a blue road. Other photo markers may be user-contributed.

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Place: Strathpeffer · Current use: Protected archaeological monument on open hill ground reached by walking routes (checked 2026-08-26)

Last reviewed: 2026-08-26 · Record: SHD-REC-STR-KNOCK-FARRIL

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