Mundo Hot Springs

## Overview Mundo Hot Springs is a natural hot spring located in the remote backcountry of western Idaho, situated at approximately 44.583°N, 116.631°W. The GPS coordinates place this spring in the rugged terrain of Adams County, within the greater Salmon River Mountains region — an area well known for its abundance of geothermal activity and natural hot springs. Idaho's western mountains sit along a geologically active zone where deep faults allow geothermally heated water to rise to the surface, and Mundo Hot Springs is one of many such features scattered throughout this wild landscape. While detailed historical records for Mundo Hot Springs are limited, the hot springs of this region have long been valued by both indigenous peoples and early settlers for their warmth and mineral content. The surrounding area is characterized by steep, forested canyons, pristine rivers, and vast stretches of undeveloped wilderness — making a visit to Mundo Hot Springs as much about the journey as the destination. As with all natural hot springs, water temperatures can vary seasonally and by specific vent. Visitors have historically used springs in this region for soaking and relaxation, though water quality and temperature should always be assessed on-site before entering. ## Directions 1. Mundo Hot Springs is located in a remote area of Adams County, Idaho, west of the town of McCall and deep in the backcountry near the Middle Fork of the Weiser River drainage. 2. From McCall, head west on Warren Wagon Road (Forest Road 21) or approach via Council, Idaho, using Forest Service roads that access the surrounding national forest lands. 3. Due to the remote and rugged nature of this area, a high-clearance or 4WD vehicle is strongly recommended. Road conditions can vary dramatically with the seasons — many forest roads in this region are impassable during winter and early spring due to snow. 4. Use the GPS coordinates (44.5831, -116.6307) with a reliable offline GPS or downloaded map, as cell service is virtually nonexistent in this area. 5. Be prepared for a potentially long drive on unpaved forest roads. Confirm current road conditions with the Payette National Forest ranger station before heading out. ## What to Expect Mundo Hot Springs is a backcountry hot spring experience in every sense. Expect a remote, undeveloped setting surrounded by Idaho's rugged mountain wilderness. The area is densely forested with conifers and cut through by steep drainages and creek valleys. Because this is an undeveloped spring, there are no facilities, signage, or maintained trails at the site. Visitors should come fully self-sufficient with water, food, navigation tools, and appropriate gear for the season. The best time to visit is typically from late spring through early fall, when forest roads are most likely to be open and accessible. The geothermal waters in this part of Idaho often carry dissolved minerals, which can give the water a slight mineral taste or sulfurous smell — a hallmark of naturally heated springs in volcanic terrain. Water temperatures at the source can be quite hot, so always test the water carefully before soaking. Wildlife is abundant in the surrounding forest, including deer, elk, black bears, and various bird species. The solitude and natural beauty of the setting make Mundo Hot Springs a rewarding destination for adventurous hot spring enthusiasts willing to make the trek.