7.30 P.M.—Gjábakki farm, close to Vellankatla (boiling kettle), north-eastern bay of lake (proper name of boiling well; Cleasby supposes it sank below water-level), along lake.
8.15 P.M.—Hrafnagjá; eastern crevasse.
9.15 P.M.—Middle crevasse, called Háflagjá, Hólagjá, or Breðnigjá (?).
⊙ VII. 9.30 P.M.—Chapel of Thingvellir.
Second march, 4 hours 10 min. = 20 miles. Total, 40 indirect statute miles; map, 26·5 direct geographical miles.
General direction, north-east and by north to south-west and south.
Glorious morning; cloudless; gentle breeze from north. At 11 A.M., chopped round to south-west. At noon west, blowing dust in face everywhere except on lava. Clouds. Few drops of rain. Presently weather recovered itself. Very fine evening and night.
Thingvellir to Reykjavik.
July 17.
3.35 P.M.—Left Thingvellir (paid $2, 3m. 0sk.).