Starting with N37° 52.000 W025° 47.000 (the given/icon coordinates), you'll need to adjust them by adding XXX to the Northings and YYY to the Westings. This point is within 3Km of the given co-ords.
Good luck! If you seem to be sent somewhere private, dangerous or hard to reach, something has gone wrong.
My thanks to PALHOCOSMACHADO and PEDRO.B.ALMEIDA for their help with this cache.
According to Wikipedia page on Sete Cidades Massif (a picture of the crater on this page sold me on the idea of coming to Sao Miguel), "The last intra-calderan eruption occurred approximately AAA years A.D", "The Sete Cidades Massif has experienced BB intra-caldera eruptions within the last 5000 years...", "Around CC,740 years ago the last phase, marked by the collapse of the northern and northeastern portions of the crater occurred", and "The depth of the caldera varies between 200 metres (660 ft) in the west to 500 metres (1,600 ft) in the east, although this varies at about ? metres (D80 ft) median" - AAA+BB+CC+D = XXX.
Also according to Wikipedia (here's a link to the page), "This rift zone is uncharaceristically EEE metres (?ft) higher than the crater rim, that it could shield Ponta Delgada from all but pyrcolastic flows associated with any future eruption", "The most recent historical eruption dates back to the 1Fth century", The superior layer includes the eruptive products of eruptions occurring GG,000 years B.C", and "The Sete Cidades Massif occupies the northwestern portion of the island and corresponds to a circular central caldera H by i kilometres" - EEE+(F x GG)+((H x 3)-i) = YYY
In memory of Jeana Smith 1940-2016, who loved gardens and would have loved Sao Miguel.