Turban and Vent
are two geysers on the north side of the 30 foot wide pool of Grand Geyser
; the former is enclosed by a low, raised ring of sinter thought to resemble a turban, while the latter is edged by thin sinter terraces, partly colored dark brown. Although not visible from the path, Turban Geyser contains a pool of clear blue water 15 feet across, and it erupts frequently - continuously when Grand is active - and from 15 to 30 minutes at most other times. Water heights are in the range five to ten feet. The opening of Vent Geyser is much smaller, less than 2 feet across; it usually erupts at intervals at the same time as Turban, but more spectacularly, to a height of 70 feet.
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