Benagil cave (Algar de Benagil)

What the sources say (research)

• Hamlet in the municipality of Lagoa (parish Lagoa e Carvoeiro); the cave (Algar de Benagil) is the only one on this coast eroded both from the side and from the top, hence the hole in the roof. [Wikipedia, 2 Oct 2026]
• Rules: Edital 019/2024 of the Capitania do Porto de Portimão, published 30 Jul 2024, in force from 13 Aug 2024, amended by Edital 009/2025 of 2 Jul 2025 (in force on publication). [amn.pt; ccdr-alg.pt, 2 Oct 2026; Edital 009/2025 PDF, 5 Oct 2026]
• Banned (Instruction 4, no. 2 of the edital): landing or sunbathing on the beach inside the cave; entering the cave swimming or with flotation aids; access with visibility under 1,000 m; scuba/free diving inside; night navigation; fishing in or near the cave. [AMN Edital 019/2024 PDF, 2 Oct 2026]
• Limits inside the cave (as amended in 2025): up to 5 motor boats at the same time, entering and leaving by the west entrance only, 2 minutes each; kayaks/SUPs only by the east entrance, in single file, in groups of 6 with 1 guide (first-aid certified), max 8 minutes, up to 14 non-motorised craft inside at once. The 2024 text allowed 3 motor boats and 7 kayaks/SUPs. [AMN Edital 009/2025 PDF, 5 Oct 2026; Edital 019/2024 PDF, 2 Oct 2026]
• No kayak or SUP tours and no kayak/SUP rentals without a guide; everyone (visitors, crew, clients) wears a life jacket for the whole visit and a helmet near rockfall zones by the cliffs and caves. [AMN Edital 009/2025 PDF, 5 Oct 2026]
• Fines (Instruction 7 of the edital, by type of breach; the 2025 amendment adds €25–€20,000 for private individuals who skip the life jacket/helmet rule): €2,200–€44,000 (maritime-safety offences), €300–€12,000, €300–€7,480, €200–€36,000 (light environmental offence) and €2,000–€216,000 (serious environmental offence, with ancillary sanctions). The single “€300–€216,000” range quoted by blogs is a mash-up of these tiers. [AMN Edital 019/2024 PDF, 2 Oct 2026]
• For the full how-to (parking, kayak vs boat vs clifftop, kids), see our Benagil cave guide.
• From Lagos by boat: Seafaris (Marina de Lagos, shop 5) runs a 1h45 Benagil speedboat tour (not for under-6s) and a Benagil + dolphins combo from €50.64. Other operators not checked. [seafaris.pt; Marriott listing, 2 Oct 2026]
• By road from the lagos.md point (37.1028, -8.6742): 42.6 km, about 41 min without traffic (routing model); the cave is reached from Benagil beach, which is in Lagoa, not Lagos. [OSRM, 2 Oct 2026]
• Guided kayak/SUP tours start from Benagil beach; boat trips from Lagos, Portimão or Albufeira marinas. [lagostransferservice.com; benagil.pt, 2 Oct 2026]

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