The red triangle trail starts on Moisei Hill in Sacel, located on DN17C national road. Walk between the houses along the village street and, after you leave the village, continue on the road along Iza Valley. The narrow road and the rocky walls (short section) indicate that you are close to Iza Meadow. After a 10-minute walk, reach the large meadow. Various summer settlements that villagers still use enliven the meadow. The road runs through the meadow to the south. There ia a bifurcation at the end: the unmodernized road to the right connects Romuli to Sacel (Romuli – Zavoaiele Borcutului – Pietrii Peak - Iza Meadow - Sacel), the road to the left goes where Iza waters reach the surface. Return to the above-mentioned bifurcation and follow the red triangle marking. Walk past a large building and follow the new thematic trail called ´The hidden water road´. The trail includes a high diversity of habitats: bat caves (Iza Cave - 2.5 km wide); species of scientific interest - Leuciscus souffia (western vairone) that has a distribution limit in the Rodna Mountains in Iza karst spring area - species of community interest, karst phenomena - permanent karst springs, peatlands (Muced or Iza tarns - the largest peat bog in the Rodna Mountains) , mountain springs, coniferous forests, subalpine meadows, priority habitats with rhododendron and blueberry bushes.