Fire crews in Lake County had a 62‑acre grass fire largely contained Wednesday morning while CHP officers investigated the crash that caused the blaze.

The fire, dubbed the Bottle fire, burned in Kelseyville near highways 29 and 175, south of Bottle Rock Road.

Cal Fire officials early Wednesday estimated crews had the fire 75‑percent contained.

It started about 4:30 p.m. when a 17-year-old Kelseyville driver headed south on Highway 29 at about 55 mph didn’t realize traffic in front of him had slowed, according to the CHP. Wyatt Gaskell braked and swerved to avoid a crash, moving into the northbound lane. Northbound driver Susan Suenram, 62, of Kelseyville, traveling about 35 mph, then swerved to avoid Gaskell’s pickup but the two collided.

Gaskell’s 1985 Toyota flipped at least twice landing in a field, touching off the fire, the CHP said. The teen suffered minor injuries and was taken to Sutter-Lakeside Hospital in Lakeport. Suenram and passenger Robert Suenram, 64, of Kelseyville, who were in a 2005 Ford F‑250 pickup, were checked for injuries at the crash scene and cleared.

Officials closed routes near the fire to traffic, allowing fire engines and equipment easier access. About 110 people were assigned to the fire Tuesday night into Wednesday morning from several Lake County fire agencies.

No structures were involved. One firefighter was injured Tuesday afternoon but details haven’t been released by Cal Fire. Fire officials initially estimated the blaze to be 75 acres but a closer analysis Wednesday morning dropped the size to 62 acres.

You can reach Staff Writer Randi Rossmann at 707‑521-5412 or randi.rossmann@pressdemocrat.com. On Twitter@rossmannreport.