A woman and three teenagers are safe after they were overcome by the summer heat at the Sal del Rey lake just east of Edinburg.
Firefighters and paramedics were called out to the Sal del Rey Unit of the Lower Rio Grande Valley National Wildlife Refuge around 12:15 p.m. Monday.
Located off Highway 186 just east of San Manuel, the wildlife refuge is home to a large inland salt lake popular among nature lovers and photographers.
Edinburg Fire Chief Shawn Snider spoke to Action 4 News about the rescue.
Chief Snider said a woman three teenagers went to visit the lake but became overheated and dehydrated while on the lake bed.
Visitors to the lake must walk on a one-mile trail from the parking lot to get to the lake bed and once there must walk another half-mile to get to the salt deposits.
Chief Snider said a medical helicopter landed in the parking lot while an ambulance drove down the trail to get to the lake bed and reach to the four distressed visitors.
Paramedics found them sweating with clear signs of dehydration.
The four refused to be taken to a hospital but were taken back to the parking lot where they got in their car and drove back home.
Chief Snider said a man in distress was rescued at the lake during another incident about three months ago.
Snider recommends that visitors wear light clothing and appropriate head gear but also take plenty of water and have a fully-charged cell phone.
"People don't realize how far it is," Snider said about the hike from the parking lot ot the lake bed.